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Method for preventing cracking of cover plate part

An anti-cracking, parts technology, applied in the furnace type, furnace, heat treatment furnace and other directions, can solve the problem of easy cracking of cover parts, achieve good mechanical properties, reduce manufacturing costs, and avoid cracks.

Active Publication Date: 2019-01-11
RAINBOW METAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method for preventing cracking of cover parts, aiming at solving the problem that the cover parts made of domestic steel (such as 65Mn steel) are easy to crack in the prior art question

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Embodiment Construction

[0021] The present invention provides a method for preventing cracking of cover plate parts. In order to make the objectives, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0022] The cover part targeted by the method of the present invention can be the cover part in the clutch and similar parts, such as figure 2 As shown, the basic structural feature is that the body 10 is plate-shaped as a whole, a central hole 101 is opened in the middle of the body, and a plurality of through holes 102 and notches 103 are opened on the body near the edge. The cover plate parts are made of domestic steel 65Mn steel, the chemical composition of the 65Mn steel includes: C (0.62% to 0.7%), Si (0.17%...

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Abstract

The invention discloses a method for preventing cracking of a cover plate part. The method comprises the following steps that S100, the cover plate part is preheated for 10-20 minutes, and the preheating temperature is 775-795 DEG C; S200, the preheated cover plate part is heated for 15-25 minutes, and the heating temperature is 800-820 DEG C; S300, oil quenching is carried out on the heated coverplate part; S400, pre-tempering is performed on the oil-quenched cover plate part for 85-95 minutes, and the temperature of the pre-tempering is 170-190 DEG C; and S500, the pre-tempered cover platepart is re-tempered for 110-130 minutes, and the re-tempering temperature is 300-320 DEG C. According to the method, imported steel is replaced with domestic manufacturing 65 Mn steel to prepare the cover plate part, so that the part not only has good mechanical properties, but also can be prevented from generating cracks, and then the manufacturing cost of the cover plate part is reduced.

Description

Technical field [0001] The invention relates to the technical field of mechanical manufacturing, in particular to a method for preventing cracking of cover plate parts. Background technique [0002] At present, industries such as automobile manufacturing have increasingly higher requirements for the quality of parts and products. In order to ensure quality while controlling manufacturing costs, domestic steel is usually chosen to replace imported steel. For example, the spring cover plate and similar cover plate parts in the clutch require high hardness and strict fatigue test requirements. In the past, such parts have been made of imported steel (such as SAE-1070), which contains many trace elements ( Such as phosphorus and sulfur), which significantly reduces the difficulty of heat treatment of parts and the difficulty of achieving flatness, and can ensure better quality, but the material cost is too high. Although the use of domestic steel (such as 65Mn steel) to make the co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D6/00C21D9/00C22C38/02C22C38/04C22C38/42
CPCC21D1/18C21D6/004C21D6/005C21D6/008C21D9/0068C22C38/02C22C38/04C22C38/42
Inventor 倪虹杰肖建威豆陕光
Owner RAINBOW METAL TECH
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