Production method of thin and long thin-plate type part
A production method and thin plate technology, applied in the direction of machine tools, furnace types, furnaces, etc. suitable for grinding workpiece planes, can solve the problems of wear-resistant slides relying on imports, wearing parts of wear-resistant slides, and expensive prices, etc., to increase Effect of natural aging process, increasing press pressure, and preventing quenching and cracking
Inactive Publication Date: 2013-04-03
INNER MONGOLIA NORTH HEAVY INDS GROUP
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Problems solved by technology
At present, several precision forging machines have been launched in China, but the wear-resistant slides are all dependent on imports, the pric
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Embodiment 1
[0017] The present invention takes the 65Mn slender thin plate with length × width × height = 2000 × 177 × 25mm as an example. 8 to 12 hours; use a press to press the quenching, press the pressure to 10Mpa, use water cooling, water temperature 20 to 40 ° C, time 4 to 6 minutes; immediately temper within two hours after quenching, tempering temperature 150 ~180°C, holding time 6-8 hours, the measured deformation is less than 3mm; use grinding method for finishing, finishing includes: rough grinding, natural aging, fine grinding, rough grinding: the front and back of the part are exposed to light, the front and back Repeated grinding 4 to 5 times, the processing amount is 1.8 mm to 2 mm; natural aging: the parts are placed on a flat plate or hang vertically, and the natural aging is 24 hours; fine grinding: the front and back sides are repeatedly ground 2 to 3 times, and the processing amount is 1 to 1.2 mm.
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The invention relates to a production method of a thin and long thin-plate type part and belongs to the field of machine manufacturing. The temperature of heat treatment is 820-900 DEG C and the heat-preservation time is 8-12 hours; a pressing machine is used for pressing to quench and the pressure of the pressing machine is improved to 6-12 Mpa; water cooling is adopted, the water temperature is 20-40 DEG C and the time is 4-6 minutes; after the quenching, annealing is carried out immediately within two hours; the annealing temperature is 150-180 DEG C and the heat-preservation time is 6-8 hours; a milling manner is used for carrying out fine machining and the fine machining comprises rough milling, natural aging and fine milling; the rough milling is carried out, namely, front and back surfaces of the part are exposed, the front and back surfaces are repeatedly milled for 4-5 times and the machining amount is 1.8-2 mm; the natural ageing is that the part is placed on a flat plate or is vertically suspended and the natural ageing is carried out for 24 hours; and the fine milling is carried out, namely, the front and back surfaces are repeatedly milled for 2-3 times and the machining amount is 1-1.2 mm. According to the production method, water quenching and cooling are adopted and the pressing machine is used for pressing to quench; spring steel is arranged so that the pressure of the pressing machine is improved and the natural ageing procedure is increased; and the deformation of the thin and long thin-plate type part is solved and the hardening crack can be effectively prevented.
Description
Technical field: [0001] The invention relates to a production method of elongated thin plate parts, which belongs to the field of mechanical manufacturing. Background technique: [0002] The wear-resistant slide plate is a slender thin plate part, which is assembled on the rail bed, and is used to increase the wear resistance when the main manipulator slides on the rail bed, and prolong the service life of the rail bed. At present, several precision forging machines have been launched in China, but the wear-resistant slides are all dependent on imports, which are expensive, and wear-resistant slides are vulnerable parts. Under this background, the localization of wear-resistant slides is proposed. The parts themselves belong to the slender and thin plate parts, which not only require wear resistance, but also have high hardness after heat treatment, and are difficult to deform after heat treatment and mechanical processing after heat treatment. Invention content: [0003]...
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Login to view more IPC IPC(8): C21D9/46C21D1/673C21D1/60C21D1/00C21D11/00B23P15/00B24B7/10
Inventor 杨秀珍武海智李新利白笃崔淑梅李志华田君何建霞孙明军刘艳敏李顺民潘慧敏李立新
Owner INNER MONGOLIA NORTH HEAVY INDS GROUP
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