Carburizing heat treatment process for 3Cr2W8V hot-forging die
A hot forging die and carburizing technology, applied in the field of carburizing heat treatment process, can solve the problems of high production cost, low product quality, low yield, etc., to improve product quality and production efficiency, with reasonable coordination and low manufacturing cost. Effect
Inactive Publication Date: 2016-07-06
CHONGQING JINSHENG MACHINERY PARTS MFG CO LTD
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Problems solved by technology
[0002] The existing carburizing heat treatment process of 3Cr2W8V hot forging die has unreasonable process arrangement, numerous processes, unreasonable selection of process parameters, unreasonable collocation of process parameters, and high requirements for operator experience, resulting in high production costs and low product quality. Low quality, low yield
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Experimental program
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Embodiment Construction
[0013] The present invention will be further described below in conjunction with embodiment:
[0014] A carburizing heat treatment process for a 3Cr2W8V hot forging die, comprising the steps of:
[0015] 1) The thickness of the seepage layer is set to 0.8mm for this material, and the design process is as follows:
[0016] 2), temperature, selection: 930±10°C carburizing, time 4h; determination method: according to the process requirements, the carburizing time is calculated according to the time of 0.2mm / h is about 4h;
[0017] 3), heating method, choice: heating with the furnace; reason: simple operation, easy control, not easy to produce stress
[0018] 4) Heating medium, choice: methanol and kerosene, adding amount: in the heating stage, 180 drops / min of methanol, 60 drops / min of kerosene when the furnace temperature exceeds 830 degrees, 100 drops / min of methanol when the furnace temperature reaches 930 degrees, Kerosene 100 drops / min;
[0019] 5) Cooling method, choose:...
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Abstract
The invention discloses a carburizing heat treatment process for a 3Cr2W8V hot-forging die. The carburizing heat treatment process comprises the following steps that (1) the thickness of a carburized layer of the material is set to be 0.8 mm, and the design process is as follows: (2) as for the temperature, carburizing is conducted at 930+ / -10 DEG C, time is 4 h, and the determining mode is that the time is calculated to be about 4 h according to the time of 0.2 mm / h on the basis of the process requirement; (3) heating with a furnace is selected to be the heating method because operation is simple and easy to control, and stress is not liable to be produced; (4) methyl alcohol and kerosene are used as heating media, and as for the adding amount, in the temperature rising stage, the methyl alcohol is added at the speed of 180 drops / min, when the furnace temperature is higher than 830 DEG C, the kerosene is stared to be added at the speed of 60 drops / min, and when the furnace temperature reaches 930 DEG C, the methyl alcohol is added at the speed of 100 drops / min, and the kerosene is added at the speed of 100 drops / min; (5) air cooling is adopted as the cooling method because the size of a workpiece is small and the thickness is only 15 mm, and air cooling is high in speed and has small influence on the workpiece; and (6) hardness detection is conducted. According to the carburizing heat treatment process, all the parameters are matched reasonably and coordinately, and the product quality and production efficiency can be effectively improved.
Description
technical field [0001] The invention relates to a carburizing heat treatment process of a 3Cr2W8V hot forging die. Background technique [0002] The existing carburizing heat treatment process of 3Cr2W8V hot forging die has unreasonable process arrangement, numerous processes, unreasonable selection of process parameters, unreasonable collocation of process parameters, and high requirements for operator experience, resulting in high production costs and low product quality. The quality is low and the yield is not high. Contents of the invention [0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a carburizing heat treatment process of a 3Cr2W8V hot forging die with reasonable process and low manufacturing cost. [0004] To achieve the above object, the present invention provides [0005] A carburizing heat treatment process for a 3Cr2W8V hot forging die, comprising the steps of: [0...
Claims
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IPC IPC(8): C23C8/46
Inventor 杨斌
Owner CHONGQING JINSHENG MACHINERY PARTS MFG CO LTD