Vacuum Degreasing Integrated Sintering Furnace Background Technology
Release time:
2025-03-04
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Abstract
Vacuum degreasing integrated sintering furnace background technology
The current powder injection moulding manufacturing procedure is: powder making, mixing and granulating into feeding, injection moulding, catalytic degreasing, thermal degreasing and sintering, shaping and secondary processing, surface treatment, and then get the finished product.
Feed injection forming into product blanks, need to carry out the whole array of plate, the product blanks one by one to the ceramic plate, and then the ceramic plate one sheet to the stainless steel plate, will be full of blanks of stainless steel plate inserted into the stainless steel shelf one sheet, the stainless steel shelves with the material car conveyor pushed into the vacuum degreasing integrated sintering furnace for catalytic degreasing, catalytic degreasing furnace with nitric acid as a catalyst, will be in the product blanks in the binder off The catalytic degreasing furnace uses nitric acid as the catalyst to remove the binder from the product blanks, leaving a certain proportion of binder in the blanks to prevent deformation of the blanks. After the end of catalytic degreasing, it is necessary to pull the stainless steel frame out of the catalytic degreasing furnace, take out the stainless steel plate one by one, then take out the ceramic plate on the stainless steel plate one by one and pour it into the graphite plate, and then insert the graphite plate one by one into the graphite box in the vacuum degreasing and sintering furnace, a graphite box of about 20 layers. Each layer is divided into front and rear of the two sheets of material boards, i.e., 40 sheets of material boards, a board can be put 20 sheets of ceramic plate, that is, a full furnace 800 each layer is divided into two plates, i.e. 40 plates, and one plate can hold 20 ceramic plates, i.e. 800 ceramic plates in the furnace. The product from the catalytic degreasing furnace to the vacuum degreasing sintering furnace are manually operated, the process requires more manpower and time.
The reason for the above technical problems is that under heating, nitric acid reacts with graphite, while stainless steel does not react significantly with nitric acid. So the vacuum degreasing integrated sintering furnace with stainless steel as the material frame and material plate. Stainless steel heat-resistant limit temperature is about 1000 ℃, 1300 ℃ has been close to the melting point, vacuum degreasing sintering furnace sintering temperature of 1300 ℃, the oven temperature of 1500 ℃, so stainless steel can not be used as a material plate into the vacuum degreasing and sintering furnace, but the graphite as a material plate, which produces the above pouring the ceramic plate process.
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2022-07-28
Zhuzhou Chi Carbon Automation Equipment Co., Ltd
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