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Alloy coating technique for metallic screw assembly surface

A technology of screw assembly and alloy coating, which is applied in the field of surface treatment of metal screws and non-return rings of accessories, can solve the problems of insufficient bonding strength and low coating performance, and achieves improved anti-abrasion performance, improved service life, and excellent resistance to wear. The effect of high temperature abrasive performance

Inactive Publication Date: 2009-02-18
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of existing metal screw components such as insufficient bonding strength with the substrate and low coating performance in surface treatment, and provide a metal screw component with high bonding strength with the substrate, convenient operation, and high coating performance Surface alloy coating process

Method used

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  • Alloy coating technique for metallic screw assembly surface
  • Alloy coating technique for metallic screw assembly surface
  • Alloy coating technique for metallic screw assembly surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Refer to attached figure 2 , the type of metal screw processed is SCM, the material is 42CrMo, and the processing state is quenched and tempered. Before laser treatment, customize the fixture and pre-determine the treatment area and overlap; then perform numerical control programming according to the specific size of the screw to be treated; clean the area to be treated on the surface of the screw, and apply alloy paint. Water cooling is used during laser processing.

[0024] The following takes the surface treatment of the metal screw of the FT-130 injection molding machine as an example. The specific steps are as follows:

[0025] 1. Install the metal screw with triangular claw plate and thimble.

[0026] 2. According to the processing requirements, carry out NC programming according to the mold line, the program block diagram is as follows figure 1 As shown, the code is as follows:

[0027] program:

[0028] N0005 G64

[0029] N0010 M4

[0030] N0015 M2=4 S2=...

Embodiment 2

[0049] Refer to attached image 3 , the treated non-return ring is an accessory of the metal screw in Example 1, the material is 40Cr, and the pretreatment state is quenched and tempered. Before treatment, customize the fixture and pre-determine the treatment area and overlapping amount; then perform numerical control programming according to the specific size of the non-return ring to be treated; clean the area to be treated on the surface, and apply alloy paint. Water cooling is used during laser processing.

[0050] Take the anti-reverse ring of FT-130 injection molding machine as an example, the description is as follows:

[0051] 1. Install the non-return ring with the triangular claw plate and adjust the level.

[0052] 2. According to the processing requirements, carry out NC programming according to the mold line, the program block diagram is as follows figure 1 As shown, the code is as follows:

[0053] program:

[0054] N0005 G64

[0055] N0010 M4

[0056] N00...

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Abstract

the invention discloses an alloy coating technology on the surface of metal screw component with metal screw and retaining ring, which comprises the following steps: (1) cleaning the needed disposal surface of metal screw component; (2) coating alloy powder material with 70-72% W, 19-22% Co, 5.5-6% C and 2-3% Al2O3 on the cleaned surface; (3) selecting laser beam and overlapping quantity corresponding to flare to proceed laser disposal; (4) cooling metal liquid.

Description

(1) Technical field [0001] The invention belongs to the field of material surface engineering and relates to a surface treatment process of metal screw components, which is suitable for the surface treatment of metal screws and non-return rings of accessories such as plastic machinery, industrial pumps and compressors. (2) Background technology [0002] At present, metal screws are widely used in plastic machinery, food machinery, industrial pumps, compressors and other equipment. Every year, a large amount of material and energy are lost due to the abrasion of the screw and other reasons. Especially in the plastic machinery industry, due to the use of various modified plastics and the high oil price, a large number of recycled materials containing mud, sand, and metal chips are used, which makes the abrasion of this type of screw more serious. The non-return ring is an important part of the screw. In plastic machinery, the non-return ring is a key part to prevent the plast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/08C21D1/09
Inventor 姚建华楼程华张群莉
Owner ZHEJIANG UNIV OF TECH