Hot forging method of wetland track plate and hot forging die thereof

Abstract

The invention discloses a hot forging method of a wetland track plate and a hot forging die thereof. According to the hot forging method of the wetland track plate and the hot forging die thereof, casting forming is changed into forging forming, round steel or square steel is forged and formed, the forged structure is compact, various mechanical properties are remarkably improved, the tensile strength is 1095 Mpa, the yield strength is 1042 Mpa, the hardening and tempering hardness is HRC30-36, the impact toughness value is 128, the cross sectional area is reduced by 31.5%, the power consumption during walking of a main machine is greatly reduced, and the light weight requirement of parts is met; the hot forging belongs to solid forming, waste gas and waste sand generated by casting smelting and casting are avoided, and the defects such as air holes, sand holes, surface cracks, slag inclusion, micro-cracks and the like influencing the mechanical properties are avoided; and the forging process is simplified, the time for each step of the forging is shortened, the problem that large areas and thin walls are difficult to form is solved, the working environment is improved, the production efficiency of each shift is 400-450 pieces, the rejection rate is not more than 0.1%, and the batch production is balanced and stable.

Description

technical field [0001] The invention relates to the technical field of forging and molding, in particular to a hot forging method for wet track shoes and a hot forging die thereof. Background technique [0002] Wetland track shoes are the key parts of construction machinery working in wetland environment. The conditions of use are extremely harsh, and the requirements for mechanical performance indicators such as tensile strength, yield strength, impact toughness and hardness are very high. The current wetland track shoes are produced by cast steel, and the following problems generally exist: [0003] 1. Harmful flue gas and waste sand are produced during the production process, and the production efficiency is low. [0004] 2. There are defects such as pores and trachoma on the casting surface. Surface microcracks generated by water toughening treatment become the source of fatigue cracks, which can easily lead to low stress brittle fracture. [0005] 3. Under the action ...

AI Technical Summary

Problems solved by technology

[0003] 1. Harmful flue gas and waste sand are produced during the production process, and the production efficiency is low

[0004] 2. There are defects such as pores and trachoma on the casting surface, and surface microcracks generated by water toughening treatment become the source of fatigue cracks, which can easily lead to low stress brittle fracture

[0006] 4. The strength of cast track shoes is not enough, resulting in plastic deformation

It is concentrated in the bolt hole, causing the screw hole to elongate or even break

[0007] 5. The weight of cast wetland track shoes is relatively heavy, which increases the power consumption of the machine

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