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Composite punch and preparation method thereof

A technology of punches and connecting surfaces, which is applied in the field of composite punches and its preparation, can solve the problems that the mechanical properties and service life of composite punches cannot meet the requirements of industrial production, and achieve stable joint quality and performance, easy welding parameters, and plasticity The effect of small deformation

Active Publication Date: 2020-09-11
江苏博联硕焊接技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a composite punch and its preparation method to solve the technical problem in the prior art that the mechanical properties and service life of the composite punch are difficult to meet the requirements of industrial production

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  • Composite punch and preparation method thereof
  • Composite punch and preparation method thereof
  • Composite punch and preparation method thereof

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention discloses a composite punch and a preparation method thereof, and relates to the technical field of dissimilar material welding. The composite punch comprises a punch body, a middle layer and a base body which are welded in sequence, wherein the middle layer is added between the punch body and the base body, so that formation of an interface brittle compound can be inhibited, and harm of residual stress of a joint can be reduced; and the thickness of the middle layer is gradually reduced from the center to the edge, so that the welding strength of the joint at the edge of the middle layer can be improved, cracks are prevented, the middle layer can absorb more impact load, impact force borne by the composite punch is relieved, and the composite punch is good in mechanical property and long in service life. According to the preparation method of the composite punch, welding is completed by utilizing diffusion of the middle layer, brittle intermediate metal can be preventedfrom being formed at the joint, the difference between the linear expansion coefficients of the punch body and the base body is reduced, the obtained welded joint is good in quality, an overheating structure and a heat affected zone do not exist, parameters are easy to control, and the joint is stable in quality and performance during batch production.

Description

technical field [0001] The invention relates to the technical field of welding of dissimilar materials, in particular to a composite punch and a preparation method thereof. Background technique [0002] Cemented carbide has excellent properties such as high hardness, corrosion resistance, and wear resistance, and is widely used in the manufacture of punch parts. However, due to its poor toughness, high brittleness and difficulty in processing, in practical applications, it is often necessary to weld cemented carbide with high-speed steel with good toughness, high strength, excellent processability and low cost to make composite punches. The composite punch can combine the advantages of the two materials, and has the advantages of high hardness, high wear resistance and good impact toughness. [0003] The performance of the composite punch mainly depends on the quality of the joint between cemented carbide and high-speed steel. Due to the large difference in the linear expan...

Claims

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Application Information

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IPC IPC(8): B21D37/10B08B3/12F26B21/00B23K20/02B23K20/14B23K20/22B23K20/24
CPCB21D37/10B08B3/12F26B21/00B23K20/025B23K20/14B23K20/24B23K20/22
Inventor 王桂龙孙福张昊邵长斌王蒙蒙王莉敏
Owner 江苏博联硕焊接技术有限公司
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