Is there any importance in vacuum sintering furnace fittings?

Is there any importance in vacuum sintering furnace fittings?

Vacuum sintering furnace consists of furnace body, furnace lining, burning device and drive parts, these are the necessary structure of vacuum sintering furnace, and in addition to these structures, vacuum sintering furnace and some accessories, vacuum sintering furnace accessories what then?
There are many kinds of vacuum sintering furnace parts, including pulse gas fuel oil burner, hot gas burner and assembly type thermocouple. So are these vacuum furnaces important? Today, suzhou qiaoshi vacuum furnace co., LTD. Briefly introduces these vacuum sintering furnace fittings.
Pulse gas fuel oil burner
The dual fuel burner allows all kinds of industrial gas and viscosity to burn well below 100 SSU. Switching from one fuel to another does not need to be removed or added to any element.
Hot gas burner
In dirty of unwashed heat generator gas as a fuel, combustion air by rotating the gushing and gas mixture flow more shares mixing and combustion stability, flame is shorter, easy to form the high temperature combustion zone, its heating ability is stronger. Because of the high air pressure than the gas pressure, telling blows air can according to the proportion of the gas suction, therefore, have certain ability to automatically adjust the burner itself.
The assembly type thermocouple
Fabricated thermocouple is commonly used in industry for measuring temperature transmitter, usually, and display instruments, electronic regulator and the recording instrument, it can be measured directly in the production of a variety of from 0 to 1800 degrees Celsius between the temperature of the liquid, gas and steam, such as medium, and the surface temperature of the solid. Fabricated thermocouple is usually by fixing device, temperature sensing element and the connection box parts together, can choose the models which are the main types: the S type, E type, type B, and K type.

Vacuum sintering furnace is used for sintering in vacuum

Vacuum sintering furnace is used for sintering in vacuum

The vacuum furnace product has the following characteristics: the vacuum furnace structure is reasonable, the heat is uniform, reliable insulation and temperature measurement, the temperature of the furnace is good. Reasonable heating structure, high quality material, guarantee the uniformity of furnace temperature under vacuum. The precision of temperature control is guaranteed by the domestic and international brand temperature control elements.
Vacuum sintering furnace is used for vacuum of vacuum sintering furnace, vacuum furnace for sintering structure must be reasonable and the loading area should be appropriate, to make good balance, vacuum sintering furnace temperature sintering material quality can be high. Vacuum furnace sintering furnace used for metal powder products, photoelectric element, ha rd alloy, magnetic alloy, ceramic powder materials, carbon fiber, carbon materials and its rare and refractory metal materials of high temperature sintering, have dewaxing function at the same time.
Vacuum sintering furnace equipment arrangement
Compact and reasonable, the area is small. Advanced automation control, comprehensive PLC automatic control and protection of water, electricity, gas system, PLC to realize the safety chain, has overtemperature, sensors, broken accidentally, water pressure, furnace pressure, water flow, water temperature higher sound and light alarm. Resistance heating is adopted in the vacuum furnace, high precision of temperature control, no noise, no pollution to the power grid, high power utilization. The cold and high temperature sections are controlled by different temperature control elements, and the automatic switch is automatic. The cooling is cooled by natural cooling, and the cooling can be cooled by charging the inert gas.

Vacuum atmosphere furnace equipment must be used under what conditions

Vacuum atmosphere furnace equipment must be used under what conditions

1. Vacuum atmosphere furnace equipment must be used in the following conditions:
1) indoor use, environment temperature in - 10 ~ 40 ℃;
2) no more than 1000 meters above sea level;
3) environmental relative humidity less than 85% RH;
4) the environment without conductive dust, inflammable and explosive objects and gases, and serious damage to metal corrosive gas;
5) no vibration and turbulence,
2. Check the circuit connection parts contact are in good condition.
3. The proper use of standardized operation, the highest temperature of 1200 ℃ can't use for a long time, overheating, overload operation of avoid by all means, keep a sudden rise in moderate quench the blackout, so as not to damage the furnace and heating wire.
Contains 4. It is strictly prohibited to high moisture, volatile matter, organic matter and other artifacts directly into the furnace heat treatment.
5. It is strictly prohibited to high temperature melting material such as metal, glass, in the absence of crucible loaded into the furnace under the condition of heat treatment.
6. Always check the electric heating element, in case of aging, fracture, short circuit should be timely repair and replacement.
7. Often remove the scrap material in furnace dust particles and fallout, etc, in order to keep clean inside the furnace.
8. It is strictly prohibited to overload the use of this equipment, so as not to cause damage of equipment structure.

Vacuum atmosphere furnace equipment must be used under what conditions

Vacuum atmosphere furnace equipment must be used under what conditions

1. Vacuum atmosphere furnace equipment must be used in the following conditions:
1) indoor use, environment temperature in - 10 ~ 40 ℃;
2) no more than 1000 meters above sea level;
3) environmental relative humidity less than 85% RH;
4) the environment without conductive dust, inflammable and explosive objects and gases, and serious damage to metal corrosive gas;
5) no vibration and turbulence,
2. Check the circuit connection parts contact are in good condition.
3. The proper use of standardized operation, the highest temperature of 1200 ℃ can't use for a long time, overheating, overload operation of avoid by all means, keep a sudden rise in moderate quench the blackout, so as not to damage the furnace and heating wire.
Contains 4. It is strictly prohibited to high moisture, volatile matter, organic matter and other artifacts directly into the furnace heat treatment.
5. It is strictly prohibited to high temperature melting material such as metal, glass, in the absence of crucible loaded into the furnace under the condition of heat treatment.
6. Always check the electric heating element, in case of aging, fracture, short circuit should be timely repair and replacement.
7. Often remove the scrap material in furnace dust particles and fallout, etc, in order to keep clean inside the furnace.
8. It is strictly prohibited to overload the use of this equipment, so as not to cause damage of equipment structure.

Excellent performance of vacuum furnace

Excellent performance of vacuum furnace

The pressure inside the chamber of a stove or furnace smoke into industrial furnace is lower than the atmospheric pressure. Vacuum furnace heating power, the heated surface oxidation, no decarburization, small deformation, the mechanical performance is good. Use the vacuum furnace smelting metal to remove impurities, less finished pinhole, segregation of small, good quality. Vacuum furnace is suitable for the high quality, high purity, refractory metal melting and heating, such as tungsten, molybdenum, tantalum, niobium, titanium, heat-resistant alloy steel smelting and magnetic materials, electrical materials of high strength steel, stainless steel, tool steel and die steel, heat treatment.
Before and after vacuum furnace appeared in the 1930 s. In 1927 the United States made electrical material vacuum annealing furnace. Vacuum since 1953 arc furnace power consumption in industry have been used for melting titanium sponge. Before and after the '50 s vacuum induction furnace is widely applied in industry. In 1960 the United States developed oil quenching vacuum furnace.

The characteristics of sintering furnace atmosphere

The characteristics of sintering furnace atmosphere

Atmosphere sintering furnace by using the most advanced temperature measurement, temperature control technology, intelligent techniques, new materials and furnace design, suitable for more atmosphere of all kinds of solid high temperature synthesis, calcining, roasting, sintering, ashing, incineration, melting and heat treatment, etc., has been adapted for use by the world first-class laboratory. The inner loop water cooling system, digital flow monitoring and control system; Using high-performance medium frequency contactor of furnace, automatic conversion; Water, electricity, gas comprehensive PLC automatic control and protection system. The characteristics of sintering furnace atmosphere:
1, atmosphere sintering furnace using special industrial microwave source, can be continuous and stable operation;
2, microwave stepless adjustable output power, achieve precise temperature control curve of temperature;
3, atmosphere sintering furnace adopts imported raytek infrared thermometer, direct measurement of the sample temperature, data are true and correct;
4, special crucible and insulation structure choice, for material non-polluting;
5, can process various microwave properties of materials, excellent versatility;
6, atmosphere sintering furnace gas channel is equipped with two road, fine controllable atmosphere;
7, real-time temperature curve, according to realize the dynamic monitoring of the heating process;
8, the microwave shielding atmosphere sintering furnace safe and reliable design, multiple anti leakage protection.
9, equipped with embedded microcomputer control system, provide manual and automatic, constant temperature three operating modes and are free to switch.

How to pick a good vacuum furnace?

How to pick a good vacuum furnace?

Vacuum furnace varieties have a lot of, including vacuum furnace pressure type vacuum furnace, vacuum furnace, high pressure and high temperature type tubular vacuum furnace, etc., equipment, the corresponding use is also different, so how to choose a good vacuum furnace? Suitable vacuum furnace?
From the perspective of process, the design of vacuum furnace will make a good product. Vacuum heat treatment process can improve the service life of the parts, is the contemporary advanced heat treatment process, it has been generally recognized by the people.
Vacuum furnace parts heat treatment was conducted under the vacuum state, and completely avoids the problem of oxidation, the parts after vacuum heat treatment is more stable and reliable performance, has provided the safeguard for high precision workpiece.
When we were in the use of vacuum furnace, heat treatment process will face some problems in the vacuum furnace can't complete, investigate its reason, generally there are two aspects: one is the vacuum furnace manufacturer in accordance with the standards of vacuum furnace production of vacuum furnace, although the technical parameters of qualified, but not yet fully in the process of production of the vacuum furnace system to consider the heat treatment process, resulted in the vacuum furnace and heat treatment process parameters do not match. Second, vacuum heat treatment process was flawed, cannot achieve the desired results. In this respect we put the heat treatment process and vacuum furnace manufacturing organic unifies in together, the effect is obvious. Through understanding the process and details of each process, design and manufacture for vacuum furnace and heat treatment process and perfect fit, solved the trouble back at home for vacuum furnace users.

The maintenance of sintering furnace

The maintenance of sintering furnace

1. The new furnace and lining refractories of replacement should be done after drying process. Oven to falling in to rise in stages. At the beginning of the dry, low temperature, long time, when the stove is cold by warming, furnace material of high moisture. In less than 400 degrees Celsius, to open the oven door discharge water vapor. When up to 700 ℃ heat preservation for a period of time. In order to make the temperature of the furnace body evenly.
, mesh belt furnace, the furnace temperature has risen to 400 ℃, shall run for a period of time, for oxidation treatment, improve the life of the net belt.
2. The low melting point impurity in the compact (S, Pb, zinc, etc) to the chamber of a stove or furnace material and heating elements are produces erosion, in order to improve the service life of the furnace, should be regularly purification furnace, presintering area, in particular, try to avoid in the powder metallurgy ingredients add S elements, such as to avoid pollution furnace and heating elements.
3. Regularly clean the stove, in using carbon monoxide or he carbon gases, could be breaking from the decomposition of hydrogen compounds to the carbon, this part of the carbon deposition on the furnace wall and heating elements, it will pollution stove, refractory erosion and damage the electric heating yuan
, so need to regular cleaning the stove.
4. Keep the body clean, regular cleaning furnace of iron oxide, gravel, zinc oxide and other debris.
5. Check the electric heating element and wire connection, prevent poor contact arc.
6. Due to the need of furnace operation under the low dew point, so the leak bolted flange sealed parts regularly
Detection.
7. Do not insert with grease tray in furnace, grease into Shanghai in one thousand will make a sharp increase in dew point affect normal operation.
8. The high temperature, don't play to open the door for a long time, in order to prevent the air into the furnace, damage the electric heating element.
9. No overtemperature operation.

Vacuum furnace production process can be divided into two broad categories

Vacuum furnace production process can be divided into two broad categories

Vacuum furnace production process can be divided into two broad categories: electrolytic method and thermal reduction process, the former USES the vacuum furnace chloride as raw material, the latter using dolomite ore as raw material, etc. Using electrolytic process conditions is the place where power rich and low price. At present only in qinghai and vacuum furnace factory using electrolysis refining vacuum furnace. Under the influence of raw materials, and other factors, our country most of the vacuum furnace factory adopts silicon thermal vacuum furnace smelting reduction method. The method using ferrosilicon as reducing agent, this method is compared with the other vacuum furnace smelting process, the technological process is simpler, less infrastructure investment, factory fast; The production process does not produce harmful gases, slag (2 ca0 si02) for production of cement or fertilizer raw materials; Silicon metal vacuum furnace thermal vacuum furnace smelting process of high purity, large economic benefit. But the size of the reduction pot was numerically simulated small, single canned capacity is low, productivity is low, the thermal efficiency is not high, continuous production, labor intensity is big. Tank outside the solid, liquid or gaseous fuel heating, smoke take away a lot of heat, not only greatly reduces the heat utilization rate, and incomplete combustion of smoke caused serious pollution to the environment.

The classification of vacuum sintering furnace and the specific use for details

The classification of vacuum sintering furnace and the specific use for details

Vacuum sintering furnace is mainly used for metal powder products, metal injection forming products, hard alloy, ceramic, sintered ndfeb, stainless steel, non-woven fabrics, etc. High temperature of vacuum sintering furnace and vacuum heat treatment furnace structure is basically the same, just according to the sintering process make the appropriate changes.
Vacuum sintering furnace is divided into double vacuum sintering furnace and single loop outdoor pressurized air cooled vacuum sintering furnace Double the same sintering furnace, vacuum sintering furnace has two public a set of vacuum system and electric control system; In operation, two furnace for heating and cooling, mutual used interchangeably. No.1 has one time in the same furnace, degreasing, the function of the sintering and sintering. Degreasing system including external pipeline, vacuum valve, condenser, collector and mechanical pump device. Single cycle outdoor pressurized air cooled sintering furnace need high vacuum pumping speed of vacuum unit, to meet the requirements of ndfeb sintering process. This furnace structure and single loop outdoor pressure gas quenching vacuum furnace are the same.

Vacuum pressure sintering furnace

Vacuum pressure sintering furnace

In vacuum pressure sintering furnace this equipment, sintering material under high temperature is also subject to mechanical stress and the effect of vacuum, can be used in the sintering density after casting products. General powder material filling in the graphite mold, mechanical pressure by 700-1500 mn/m3, and heated to 2500 ℃ in the vacuum. Mold by direct current heating, indirect heating.
Vacuum pressure sintering furnace is mainly used for sintering is the density of the material with high temperature gas reactions billet, such as oxide, carbide and boride gas after sintering material can reach very high density, general density is greater than the theoretical value of 95%, and with high purity. Graphite resistor and graphite mould in the vacuum operation of weight loss is minimal. Vacuum hot pressing sintering is at the same time in the compaction process and utilization of high pressure, temperature and time, and many other parameters to control the quality of the sintered body.

Vacuum sintering furnace is how to work?

Vacuum sintering furnace is how to work?

 

Vacuum sintering furnace is in a vacuum environment to be heated objects in protective sintering furnace, its heating mode is more, such as resistance heating, induction heating, microwave heating, etc. Vacuum induction furnace is heated objects to make use of induction heating protective sintering furnace, can be divided into the power frequency, medium frequency, high-frequency, such as type, can be ascribed to a subclass of vacuum sintering furnace.
Vacuum sintering furnace can meet the requirements of rapid heating process; Intelligent temperature control switches use imported more sections program c the instrument control, c the stability of the control switches, repeatability is very reliable; Frequency conversion stepless speed regulation, stainless steel mesh belt transmission, the appearance of the new design concept, to ensure that the product smooth conveying.
Vacuum sintering furnace by using the principle of intermediate frequency induction heating, the high temperature of tungsten crucible in the winding, by heat conduction to work on, suitable for scientific research, military units for hard metal such as tungsten, molybdenum and its alloy powder sintering molding.

The design of vacuum sintering furnace

The design of vacuum sintering furnace

Vacuum sintering furnace with perfect performance design, integrating multiple patents at a suit, security, reliability and practicability of the best results. The design of vacuum sintering furnace advantages are:
1, using vacuum forming technology, electric stove wire inlay on the inner surface of the ceramic plate, a molding chamber of a stove or furnace tank, to prevent pollution by volatile matter.
2, the four sides of electric stove wire installed in the chamber of a stove or furnace, special heat insulation design, furnace can be replaced.
3, double shell, air circulation and heat insulation, the surface temperature is low.
4, fast loading quickly open the oven door design, loading convenient, structure of double ended, the outer pressure vessel welding technology.
5, with the door automatic power-off protection design, has the ultra high temperature alarm function, with functions of thermocouple damaged power outages, with functions of built-in password control parameters.
6, with no paper record history data and curve of temperature, the temperature deviation error correction function, can manage multiple devices and remote fault diagnosis analysis.
7, multiple security protection design, safety performance is good, long service life.

The vertical design of the control system of high temperature and vacuum sintering furnace

The vertical design of the control system of high temperature and vacuum sintering furnace

Vertical high temperature vacuum sintering furnace system structure and function. Based on the system requirements and design of the operating process based on distributed, modular DCS control solutions. Detailed discusses the hardware configuration and software design of the control system, realize the real time monitoring of production process equipment operation condition and was accused of amount of online real-time display. This control scheme has simple hardware, the configuration of flexible characteristics, applicable to small and medium-sized control system.
With the continuous development of science and technology, industry, national defense, aerospace and other fields in China have made great progress, the vacuum furnace equipment manufacturing equipment level, production process, control technology also has the very big enhancement. Prompted materials along with the continuous improvement of science and technology in the field of development, in the aviation, aerospace, military industry, energy and chemical industry in areas such as some special material, the new material has been widely used. The vacuum heat treatment technology in the production of these special materials, new materials manufacturing process plays a more and more important role. Vertical high temperature vacuum sintering furnace is mainly suitable for cemented carbide, ceramics, magnetic materials, porous materials of vacuum sintering, can meet all kinds of high temperature oxidation resistant coating the surface of the parts sintering requirements, is developed for a domestic space military enterprise space equipment specialized equipment, mainly by the vacuum system, furnace, bottom sliding on the oven door and locking mechanism, closed water system, heating power systems and electrical automatic control system, etc.

The classification of vacuum sintering furnace and the specific use for details

The classification of vacuum sintering furnace and the specific use for details

Vacuum sintering furnace is mainly used for metal powder products, metal injection forming products, hard alloy, ceramic, sintered ndfeb, stainless steel, non-woven fabrics, etc. High temperature of vacuum sintering furnace and vacuum heat treatment furnace structure is basically the same, just according to the sintering process make the appropriate changes.
Vacuum sintering furnace is divided into double vacuum sintering furnace and single loop outdoor pressurized air cooled vacuum sintering furnace Double the same sintering furnace, vacuum sintering furnace has two public a set of vacuum system and electric control system; In operation, two furnace for heating and cooling, mutual used interchangeably. No.1 has one time in the same furnace, degreasing, the function of the sintering and sintering. Degreasing system including external pipeline, vacuum valve, condenser, collector and mechanical pump device. Single cycle outdoor pressurized air cooled sintering furnace need high vacuum pumping speed of vacuum unit, to meet the requirements of ndfeb sintering process. This furnace structure and single loop outdoor pressure gas quenching vacuum furnace are the same.

Vacuum sintering cemented carbide is the main production process

Vacuum sintering cemented carbide is the main production process

Vacuum dewaxing sintering furnace can be a one-time degumming, sintering, cooling and molding charge of a full set of technical process. In the traditional drying sintering furnace structure added a graphite on the basis of the tank, and low voltage carrier gas dewaxing process is adopted to be collected wax device isolated after bonding (molding) agent, residual gas in a variety of ways.
With the above process, forming agent is not in the oven and it touches a cold surface accumulated inside the furnace, also won't pollution insulation and heating element. Vacuum sintering cemented carbide is the main production process, the sintering process for vacuum dewaxing sintering furnace temperature must be integrated according to the corresponding to the sintering products in the process of sintering temperature curve to carry on the control, the tracking error and overshoot amount have strict index requirements.

Vacuum pressure sintering furnace

Vacuum pressure sintering furnace

In vacuum pressure sintering furnace this equipment, sintering material under high temperature is also subject to mechanical stress and the effect of vacuum, can be used in the sintering density after casting products. General powder material filling in the graphite mold, mechanical pressure by 700-1500 mn/m3, and heated to 2500 ℃ in the vacuum. Mold by direct current heating, indirect heating.
Vacuum pressure sintering furnace is mainly used for sintering is the density of the material with high temperature gas reactions billet, such as oxide, carbide and boride gas after sintering material can reach very high density, general density is greater than the theoretical value of 95%, and with high purity. Graphite resistor and graphite mould in the vacuum operation of weight loss is minimal. Vacuum hot pressing sintering is at the same time in the compaction process and utilization of high pressure, temperature and time, and many other parameters to control the quality of the sintered body.

Vacuum sintering furnace is how to work?

Vacuum sintering furnace is how to work?

Vacuum sintering furnace is in a vacuum environment to be heated objects in protective sintering furnace, its heating mode is more, such as resistance heating, induction heating, microwave heating, etc. Vacuum induction furnace is heated objects to make use of induction heating protective sintering furnace, can be divided into the power frequency, medium frequency, high-frequency, such as type, can be ascribed to a subclass of vacuum sintering furnace.
Vacuum sintering furnace can meet the requirements of rapid heating process; Intelligent temperature control switches use imported more sections program c the instrument control, c the stability of the control switches, repeatability is very reliable; Frequency conversion stepless speed regulation, stainless steel mesh belt transmission, the appearance of the new design concept, to ensure that the product smooth conveying.
Vacuum sintering furnace by using the principle of intermediate frequency induction heating, the high temperature of tungsten crucible in the winding, by heat conduction to work on, suitable for scientific research, military units for hard metal such as tungsten, molybdenum and its alloy powder sintering molding.

The design of vacuum sintering furnace

The design of vacuum sintering furnace

Vacuum sintering furnace with perfect performance design, integrating multiple patents at a suit, security, reliability and practicability of the best results. The design of vacuum sintering furnace advantages are:
1, using vacuum forming technology, electric stove wire inlay on the inner surface of the ceramic plate, a molding chamber of a stove or furnace tank, to prevent pollution by volatile matter.
2, the four sides of electric stove wire installed in the chamber of a stove or furnace, special heat insulation design, furnace can be replaced.
3, double shell, air circulation and heat insulation, the surface temperature is low.
4, fast loading quickly open the oven door design, loading convenient, structure of double ended, the outer pressure vessel welding technology.
5, with the door automatic power-off protection design, has the ultra high temperature alarm function, with functions of thermocouple damaged power outages, with functions of built-in password control parameters.
6, with no paper record history data and curve of temperature, the temperature deviation error correction function, can manage multiple devices and remote fault diagnosis analysis.
7, multiple security protection design, safety performance is good, long service life.

Vacuum sintering furnace operation need to be aware of the safety of the "six"

Vacuum sintering furnace operation need to be aware of the safety of the "six"

A lot of people in the use of vacuum sintering furnace is will encounter a few problems, it may be because the operator does not pay attention to these problems, the following is to tell everyone about a vacuum sintering furnace safety operation need to be aware of "6"
1, check the vacuum pump power supply system, the pulley belt tightness, vacuum pump oil is located in the oil seal observation hole centerline. Check completed after artificial turn the vacuum pump pulley, without exception, but in the case of closing butterfly valve, vacuum pump.
2, check the vacuum furnace, vacuum furnace in the level of health, good insulation, induction coil, vacuum sealing tape elastic, qualified size.
3, check the lever handle to start the vacuum furnace is flexible.
4, check the rotation type McLeod gauge whether accord with requirement.
5, check the graphite crucible furnace charging accessories are complete.
6, vacuum furnace cover of observation, the thermometer hole, each furnace must be clean processing, in order to observe and temperature measurement.
Above is about the safety of vacuum sintering furnace operation, as long as to master the correct steps and pay attention to some detail problems can make us vacuum sintering furnace and effective operation.