Casting method for reduction gearbox shell
A gearbox and shell technology, which is applied in the field of casting of gearbox shells, can solve the problems of gearbox shell appearance defects, low yield, and substandard mechanical properties, so as to achieve a high pass rate, maintain a pass rate, and reduce costs Effect
Pending Publication Date: 2021-08-10
ANHUI TIANPING MASCH CO LTD
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Problems solved by technology
[0002] In the fierce competition of the world's automobile industry, all automobile manufacturers are developing in the direction of high quality, high reliability, light weight, energy saving, and low cost; Aluminum alloy materials replace some steel (iron) parts to meet the requirements of high-quality and low-cost development of automobiles; at present, my country's automotive gearbox shell materials have a low yield rate, and the appearance of the cast gearbox shell Defects, or the mechanical properties are not up to standard after quenching
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[0030] Such as figure 1 As shown, the casting method of the gear box housing described in this embodiment includes the following steps,
[0031] S1 with sand
[0032] Prepare molding sand for sand mold preparation and core sand for sand core preparation;
[0033] S2 Prepare mold
[0034] Prepare the mold, including sand mold, sand core and sand box; the sand mold is set in the sand box, and the sand core is set in the sand mold to form a pouring cavity;
[0035] S3 casting molding
[0036] Inject the molten metal into the pouring cavity and fill it, cooling and molding to obtain castings;
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The invention provides a casting method for a reduction gearbox shell. The casting method comprises the following steps: S1, sand preparation: preparing molding sand and core sand; S2, mold preparation: preparing a mold which comprises a sand mold, a sand core and a sand box, wherein the sand mold is arranged in the sand box, the sand core is arranged in the sand mold, and a casting cavity is formed; S3, casting molding: injecting a molten metal liquid into the casting cavity till the casting cavity is fully filled with the molten metal liquid, and carrying out cooling molding so as to obtain a casting; S4, casting appearance detection: observing whether any appearance defects exist on the surface of the casting or not, wherein the machining operation is carried out till the qualification demand is met if the casting is unqualified, the scrap disposition is carried out if the casting cannot reach the acceptable quality through later machining, and the next working procedure is carried out if the casting is qualified; S5, casting heat treatment: putting the qualified blank into a heat treatment device for heat treatment; S6, casting performance detection: carrying out mechanical performance testing on the casting, and carrying out the next working procedure if the casting is qualified; and S7, casting warehousing: labeling the qualified gearbox shell, recording performance parameters of the labeled shell, and carrying out warehousing for storage.
Description
technical field [0001] The invention relates to the technical field of gear box casting and molding, in particular to a casting method for a gear box shell. Background technique [0002] In the fierce competition of the world's automobile industry, all automobile manufacturers are developing in the direction of high quality, high reliability, light weight, energy saving, and low cost; Aluminum alloy materials replace some steel (iron) parts to meet the requirements of high-quality and low-cost development of automobiles; at present, my country's automotive gearbox shell materials have a low yield rate, and the appearance of the cast gearbox shell There are defects, or the mechanical properties are not up to standard after quenching. Contents of the invention [0003] The invention aims at the deficiencies of the prior art and provides a casting method for the gear box casing. [0004] The present invention realizes solving above-mentioned technical problem by following tec...
Claims
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IPC IPC(8): B22C9/02B22C9/22C21D9/00C22C21/06C22F1/047
CPCB22C9/02B22C9/22C22C21/06C22F1/002C22F1/047C21D9/0068
Inventor 兰春平田华伟刘志陈文才魏信义
Owner ANHUI TIANPING MASCH CO LTD