Vacuum hot pressing furnaces generally have a combination of the following mechanical systems

Vacuum hot pressing furnaces generally have a combination of the following mechanical systems

After the vacuum hot pressing furnace warms the parts to the required temperature in a vacuum state, the pressure heads on the upper and lower sides move to compress and deform the parts, and then the raw materials of the parts reach the process requirements of impurity removal, purification, high density, etc.In addition to high temperature and pressure filling in a vacuum state, a variety of composite materials can be manufactured, and high temperature calcination can also be achieved. It is a multi-purpose vacuum technology.

Structure description：

　　Vacuum hot pressing furnaces generally have a combination of several mechanical systems, as follows：

　　1. The heating furnace of the vacuum hot pressing furnace is a vertical test structure, using a two-layer water sandwich structure, and the inner, surface and flange are all 304 stainless steel.The furnace body of the vacuum hot pressing furnace can be divided into two parts, one-third of which is the furnace cover, which can be manually opened and closed on the side, and two-thirds of which is the fixed furnace body. The design is different and is conducive to actual operation.

　　2. Vacuum system: it consists of oil diffusion pump, Roots pump, mechanical pump with electromagnetic differential pressure valve, inflation valve, vent valve, vacuum butterfly valve, vacuum pressure gauge (±Pa) bellows, vacuum pipeline and bracket.

　　3. Hydraulic system: choose the electric input method.The hydraulic station is equipped with imported proportional valves, pressure sensors, displacement displays, grating rulers (ranging accuracy 0.02mm), hydraulic cylinders and other related hydraulic devices, and the pressure adjustment is semi-automatic and can be adjusted manually.The instrument can be set to automatically adjust the pressure, and can achieve voltage regulation and holding.

　　4. Water cooling system: it is composed of various valve and pipeline related devices and is equipped with sound and light alarms to automatically cut off the heating source or function.

　　5. Temperature control system: the use of SCR temperature control, equipped with PID function instrument, digital display meter, with over-temperature sound and light alarm function, PLC touch screen can also be selected for automatic control, and historical data is retained, which is conducive to the analysis of the calcination process.

　　6. Inflation system: it consists of various pipelines and valves, and is equipped with electromagnetic venting valves and pressure sensors. When the pressure in the furnace is higher than the safe value, it will automatically deflate. The inflation pipeline is equipped with a needle valve to control the inflation amount.

Daily maintenance：

　　1. The air pump with air ballast function should be checked before the furnace starts every day, and turned on for 30 minutes as needed to remove moisture from the pump oil.

　　2. Check the pressure of cooling water, compressed air, hydraulic system and the flow rate of cooling water.

　　3. When closing the protective door, check the rubber seals and flanges of the vacuum furnace door.There should be no sand or debris.The rubber sealing ring and flange should be wiped clean with a thousand mesh bandage, and vacuum grease should be evenly applied before closing the door.

　　4. The workpiece must be cleaned before being placed in the furnace.After the oil is quenched, the oil on the oil-immersed material frame and the conveying parts should be *cleaned.

　　5. Air-cooled motors are usually used.If it cannot be started in a vacuum, it must be inflated before starting, and an electrical interlocking protection device should be used for protection.

　　6. The pump should operate under vacuum conditions above 133 3A, and should be protected by an electrical interlocking protection device.