Laser welding method for laser cladding stainless steel plate on the surface of hydraulic cylinder movable column

A stainless steel plate, laser cladding technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of poor wear resistance, coating shedding, high cost of powder cladding, etc., to achieve good corrosion resistance, little pollution, low cost effect

Active Publication Date: 2018-07-24
阳泉煤业集团华越机械有限公司
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Problems solved by technology

[0002] With the continuous development of my country's coal mining technology, coal machinery equipment is developing towards heavy-duty. The hydraulic cylinder is an important part of the hydraulic support. The live column on the cylinder is mainly chrome-plated to ensure its wear resistance and corrosion resistance. As my country's awareness of environmental protection has increased, the cost of surface chrome plating has increased significantly, and the chrome layer is prone to coating peeling off, rust, and poor wear resistance in the harsh environment of mines. At present, manufacturers have used powder laser cladding. Instead of chrome plating, but the cost of powder welding is too high, it is only suitable for rework of some live columns

Method used

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Examples

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Effect test

Embodiment Construction

[0010] Take the oil cylinder live column with a diameter of φ61 as an example; the diameter of the oil cylinder live column is D=61mm; the length of the designed chrome-plated area is L=400mm; the rough turning of the chrome-plated area of ​​the oil cylinder live column is 60.4mm, and the diameter of other sizes is left with a margin of 0.6mm; according to the finishing process If necessary, choose 304 stainless steel sheet with a thickness of 0.8mm; cut the stainless steel sheet and blank it, and the blanking size is 198*400*0.8mm. Process according to the inventive method:

[0011] (1) Coil a 0.8mm thick stainless steel sheet on the live column of the oil cylinder that has been roughed, and control the butt joint within 1mm. After rolling, the outer diameter is required to be 62±0.2mm; After the seam is welded, the weld seam height is controlled at 1.5~2mm, and the weld seam is polished smooth with an angle grinder;

[0012] (2) Clamp the cylinder live column on the rotary ...

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Abstract

The invention discloses a laser welding method for laser cladding of a stainless steel sheet on the surface of a hydraulic oil cylinder plunger. According to purposes, the method is simple, practical, low in cost and little in pollution. The method includes the steps that firstly, the stainless steel sheet is coiled on the oil cylinder plunger, argon arc welding is used for well welding a butt joint welding line, and the welding line is polished to be smooth; then, the oil cylinder plunger is clamped onto a rotation mechanism of a numerical control laser surface treatment device, and laser hoop welding is conducted on the stainless steel sheet coiled on the oil cylinder plunger till the stainless steel sheet is completely arranged on the surface of the oil cylinder plunger in a cladding manner; then a lathe is used for conducing finish turning on the oil cylinder plunger surface obtained after cladding for forming; and an external cylindrical grinding machine is used for grinding the surface of the oil cylinder plunger till the needed size is obtained, and roughness reaches 0.4 micron.

Description

technical field [0001] The invention relates to the surface treatment of a live column of a hydraulic oil cylinder, in particular to a processing method of using thin stainless steel laser welding on the live column to replace the original surface electroplating and powder laser welding. Background technique [0002] With the continuous development of my country's coal mining technology, coal machinery equipment is developing towards heavy-duty. The hydraulic cylinder is an important part of the hydraulic support. The live column on the cylinder is mainly chrome-plated to ensure its wear resistance and corrosion resistance. As my country's awareness of environmental protection has increased, the cost of surface chrome plating has increased significantly, and the chrome layer is prone to coating peeling off, rust, and poor wear resistance in the harsh environment of mines. At present, manufacturers have used powder laser cladding. Instead of chrome plating, but the cost of powd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 白永胜鄯继林崔宇飞王瑞彦梁篆芝胡明刚陈迎华申欢欢赵长林胡振庐李淑琴杨波
Owner 阳泉煤业集团华越机械有限公司
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