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Hot runner nozzle with composite structure and manufacturing method thereof

A technology of hot runner nozzle and composite structure, which can be used in manufacturing tools, welding media, gas flame welding equipment, etc., and can solve the problems of good wear resistance, poor thermal conductivity, and no wear resistance.

Pending Publication Date: 2021-04-02
INST OF APPLIED PHYSICS JIANGXI ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Beryllium copper has good thermal conductivity, but not wear-resistant; ordinary mold steel has poor thermal conductivity, but good wear resistance; the cost of cemented carbide is too high

Method used

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  • Hot runner nozzle with composite structure and manufacturing method thereof
  • Hot runner nozzle with composite structure and manufacturing method thereof
  • Hot runner nozzle with composite structure and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, a hot runner nozzle with a composite structure provided in the embodiment of the present application includes a cemented carbide tip 1 and a part body 3 , and the cemented carbide tip 1 and the part body 3 are welded.

[0042] In the prior art, uniform materials are used, among which beryllium copper has good thermal conductivity, but is not wear-resistant; ordinary mold steel has poor thermal conductivity, but good wear resistance; and the cost of hard alloy is too high. This patent is to use a brazing process to compositely manufacture the hot runner nozzle on the basis of cost control. The use of a composite structure of different materials improves the wear resistance of the head of the hot runner nozzle, thereby increasing the service life.

Embodiment 2

[0044] Such as figure 2 As shown, a method for manufacturing a hot runner nozzle with a composite structure provided in the embodiment of the present application includes the following steps:

[0045]S1: Assemble the cemented carbide tip 1, the solder 2 and the part body 3;

[0046] S2: use brazing to weld the cemented carbide tip 1 and the part main body 3 through the solder 2;

[0047] S3: grinding and polishing the surfaces of the welded cemented carbide tip 1, brazing material 2 and part main body 3;

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Abstract

The invention provides a hot runner nozzle with a composite structure and a manufacturing method thereof, and relates to the technical field of hot runner nozzles. The manufacturing method comprises the following steps of: assembling a hard alloy tip, brazing filler metal and a part body; welding the hard alloy tip and the part main body through the brazing filler metal in a brazing mode; grindingand polishing the surfaces of the welded hard alloy tip, brazing filler metal and part main body; and conducting flaw detection on the welded and polished hard alloy tip, brazing filler metal and part main body. The abrasion resistance of the head of the hot runner nozzle is improved through the composite structure made of different materials, and therefore the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of hot runner nozzles, in particular to a hot runner nozzle with a composite structure and a manufacturing method thereof. Background technique [0002] A hot runner is a heating component system used in injection molds to inject molten plastic particles into the cavity of the mold. The hot runner mold is a new structure that heats the runners and runners of the traditional mold or the three-plate mold, and does not need to take out the runners and runners during each forming. The hot runner system generally consists of several parts such as hot nozzles, manifolds, temperature control boxes and accessories. This picture is the front end of the hot runner. It mainly includes temperature control components and thermal nozzles, and the rest are connecting parts. [0003] The process of hot runner injection molding is to heat the engineering plastic raw materials in the cavity, PE, PP, glass fiber and other r...

Claims

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Application Information

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IPC IPC(8): B29C45/27B23K1/002B23K1/00B23K5/00B23K35/30C22C30/02C22C30/06
CPCB29C45/278B23K1/002B23K1/0004B23K1/00B23K5/006B23K35/3006C22C30/02C22C30/06B29C2045/2787B23K2103/12
Inventor 陈新贵王日昕
Owner INST OF APPLIED PHYSICS JIANGXI ACADEMY OF SCI
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