Vacuum sintering furnace: 七月 2016

2016年7月27日星期三

Discharge plasma sintering furnace

Discharge plasma sintering because of strong impulse current between powder particles, so can produce a lot of beneficial to the effect of rapid sintering. Compared to the conventional sintering technology has the following advantages:
Sintering speed;
Improved ceramic microstructure and improve the performance of materials
Discharge plasma sintering is a combination of plasma activation, hot pressing, resistance heating, heating speed, short sintering time, sintering temperature, uniform grain size, low benefit to control the sintering of fine structure and get the material density is high, and has simple operation and high reproducibility and reliable safety, save space, save energy and low cost advantages.

2016年7月22日星期五

Powder metallurgy sintering furnace

Powder metallurgy sintering furnace used for powder metallurgy material or metallurgical furnace sintering of powder metallurgy products.
Sintering furnace is mainly the electric stove. Sintering furnace is divided into two categories: resistance sintering furnace and induction furnace, sintering furnace using more resistance. Resistance furnace is through the electric heating element to turn electric energy into heat energy is used for sintering furnace; Induction furnace is the use of electromagnetic induction in metal inspire a current heating furnace.
According to use atmosphere and vacuum furnace, resistance furnace is divided into ordinary atmosphere resistance sintering furnace and vacuum resistance furnace, induction furnace can be divided into ordinary induction furnace and vacuum induction furnace atmosphere; According to the furnace structure, sintering furnace is divided into vertical resistance sintering furnace and horizontal resistance sintering furnace, induction furnace induction furnace can be divided into vertical and horizontal induction sintering furnace; According to the operation properties, resistance sintering furnace is divided into intermittent type resistance furnace and continuous type resistance furnace, induction furnace can be divided into continuous induction sintering furnace and continuous induction sintering furnace. In addition, the induction sintering furnace according to the frequency of use, can be divided into the medium frequency induction furnace (500 hz to 10 KHZ) and high frequency induction furnace (70 ~ 200 KHZ). According to the heating mode, resistance sintering furnace is divided into indirect heating type resistance furnace and direct heating type resistance furnace. Indirect heating type resistance furnace is refers to the current heat produced by the electric heating element, heat transfer by radiation chamber of a stove or furnace temperature and heat the products; Direct heating type resistance furnace is refers to the current through the heated directly by the power supply through the joint products make its heating, for example, used in tungsten, molybdenum, tantalum, and niobium refractory metal, such as high temperature sintering temperatures hanging furnace is a kind of typical direct type resistance furnace heating.
Sintering need to use the pressure and pressure sintering furnace, the furnace is mainly used for thin layer products such as powder metallurgy sintering friction plate, bell type furnace is a kind of typical pressure sintering furnace.

2016年7月19日星期二

The vacuum furnace maintenance and maintenance

1, according to the PLC program of low vacuum: all the vacuum valve closed, start the mechanical pump, after waiting for its running normally (about 1 to 2 min), open to the furnace of low vacuum valve disc valve, in advance of furnace smoke low vacuum;
2, according to the PLC program, high vacuum, open the valve disc, the diffusion pump suction, after 15 Pa under vacuum, the system automatically open to preheat diffusion pump, diffusion pump in about after 45 min started its function, can closed on disc valve, at the same time open the main stop valve for vacuum degree of 1.33 x 10 Pa, the samples can only open the heating button to heat.
Vacuum furnace maintenance guide equipment operators within the scope of responsibility of equipment point check parts, with the right inspection methods and tools based on the tally equipment daily maintenance cycle; The operator according to the daily maintenance manual fill in the heat treatment equipment daily maintenance records, and check by the team leader review, maintenance man to collect the archive. According to the technical requirements after the installation of complete equipment, perfect and has a good grounding, debugging and acceptance in accordance with the following items.

2016年7月15日星期五

Vacuum Induction High Temperature Graphite Furnace

Vacuum induction high temperature graphite furnace adopts the medium frequency induction heating principle in a vacuum or inert gas conditions by allowing the induction coil generating an alternating magnetic field, and then the graphite crucible and the induction coil generates eddy currents were self-heating.Graphite crucible is to produce high temperature and make radiation to the workpiece to reach the desired temperature.Applications :sintering process for carbon materials, carbon fiber and other composite materials graphitization. Feature :
1.High automatic, it can be fully automation with the furnace model simulation display and real-time display device when running. It can be equipped with PLC controller and human-machine interface control system.
2.Very safe, using PLC to achieve security chain, with sound-light alarm when over-temperature, sensor burnout, over pressure of furnace and water, water flow, water temperature is too high .
3.It can be equipped with a built-in or external fast-cooling system,improving the working efficiency
4.Advanced temperature, vacuum detection instruments and sensor components to ensure reliability of the equipment
5.Energy-saving, special made coil and insulation structure, power output stability, high electrical efficiency.

2016年7月11日星期一

The main principle of vacuum sintering furnace

Vacuum sintering furnace is in a vacuum environment of the article to be heated in protected sintering furnace, which heating more, such as resistance heating, induction heating, microwave heating.
Vacuum induction furnace is the use of induction heating for the protection of the object to be heated sintering furnace, can be divided into power frequency, intermediate frequency, high frequency and other types, can be attributed to a subclass of the vacuum sintering furnace.
Vacuum induction sintering furnace vacuum induction sintering furnace under vacuum or protective atmosphere conditions, using the principle of induction heating makes carbide blades and metal powder is pressed sintered body to achieve complete equipment for carbide, metal dysprosium industrial ceramics production and design.

2016年7月5日星期二

Vacuum Through Hydrogen Sintering Furnace

Vacuum through hydrogen sintering furnace is charged with hydrogen to protect the furnace state, adopting the principle of intermediate frequency induction heating to get the tungsten crucible coil generating heat by thermal radiation transfer to the sintered materials and refractory alloys, such as tungsten, molybdenum, titanium and its alloys molding powder sintering. It is equipped with safety explosion-proof equipment improve the safety of the equipment and realize the high voltage, low current, energy-saving effect.The insulation layer is made of a special structure design, improve equipment reliability. Automatic vacuum furnace temperature control which can provide multiple thermal curve for storage, select or recycling, the sintering process can be recorded and output. IGBT frequency power supply, with stable and high efficiency output.