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Surface coating used for cold extrusion shaped metallic product

A technology for surface coating and forming metal, applied in the petroleum industry, base materials, additives, etc., can solve the problems of environmental protection of coatings and hidden dangers of human health, surface quality defects of pipe fittings, environmental hazards and other problems, so as to reduce surface mottled defects , The effect of reducing the vibration degreasing process and avoiding damage

Active Publication Date: 2008-02-20
江苏华阳管业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many types of coatings used in the process of hot-pressing or cold-pressing metal pipe fittings at home and abroad (forced deformation). The past coatings have certain hidden dangers to environmental protection and human health, and are not easy to clean. After processing, the pipe fittings ( There are certain defects in the surface quality of the road), and the mold is easy to be damaged
For example, the chlorinated rubber + toluene coating used in the past has a pungent smell. It will be harmful to the human body in this environment for a long time; moreover, this kind of coating is easy to volatilize and difficult to clean. Make the residue that is not easy to clean form mottled defects on the surface of the pipe fittings; at the same time, it will also pose a certain threat to safety
Another example is the 566B glue used, which volatilizes very quickly, and the discharge after use will cause certain harm to the surrounding environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An easy-to-clean surface coating for cold extruded metal products according to the present invention is formed by mixing three components of gypsum, machine oil and lubricating grease in a weight ratio of 1:5:0.25. The mechanical oil is 46# hydraulic oil, and the lubricating grease is lard. Take:

[0014] 1 kg of gypsum has a particle size of 500 mesh.

[0015] 46# Use 5 kg of hydraulic oil again.

[0016] Lard: 0.25 kg.

[0017] When using, mix gypsum, hydraulic oil and lard three kinds of substances together, mix them well, stir them evenly, and brush them on the outside of the tube blank manually or mechanically, and the coating thickness is 200μm. The surface quality of processed metal products is uniform without defects such as strain, and it is easy to clean. The mold has a long service life.

Embodiment 2

[0019] An easy-to-clean surface coating for cold extruded metal products according to the present invention is formed by mixing three components of gypsum, machine oil and lubricating grease in a weight ratio of 1:3:0.8. Butter is used as machine oil, and lard is used as lubricating grease. Take:

[0020] 1 kg of gypsum has a particle size of 400 mesh.

[0021] 3 kg of butter.

[0022] Lard: 0.8 kg.

[0023] When in use, mix gypsum, butter, and lard together, stir well, and brush on the outside of the tube by hand or mechanically, with a coating thickness of 100 μm.

Embodiment 3

[0025] An easy-to-clean surface coating for cold extruded metal products according to the present invention is formed by mixing three components of gypsum, machine oil and lubricating grease in a weight ratio of 1:10:0.1. Butter is used as machine oil, and lard is used as lubricating grease. Take:

[0026] 1 kg of gypsum has a particle size of 400 mesh.

[0027] 10 kg of butter.

[0028] Lard: 0.1 kg.

[0029] When in use, mix gypsum, butter, and lard together, stir them evenly, and brush on the outside of the tube by hand or mechanically. The coating thickness is 250 μm.

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Abstract

An easily removed surficial coated layer of the metallic product to be cold-extruded is prepared from gypsum, machine oil and lubricating grease in weight ratio of 1:(3-10): (0.1-0.8) through mixing. The thickness of coated layer is 100-250 microns.

Description

1. Technical field [0001] The invention relates to a surface coating for cold extruded metal products, in particular to an easy-to-clean surface coating for cold extruded metal pipe fitting blanks. 2. Background technology [0002] At present, there are many types of coatings used in the process of hot-pressing or cold-pressing metal pipe fittings at home and abroad (forced deformation). The past coatings have certain hidden dangers to environmental protection and human health, and are not easy to clean. After processing, the pipe fittings ( There are certain defects in the surface quality of the road), and the mold is easy to be damaged. For example, the chlorinated rubber + toluene coating used in the past has a pungent smell. It will be harmful to the human body in this environment for a long time; moreover, this kind of coating is easy to volatilize and difficult to clean. The residue that is not easy to clean will form mottled defects on the surface of the pipe fitting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/00B21C23/32C10M109/00C10M125/00
Inventor 李鸣丁月霞
Owner 江苏华阳管业股份有限公司
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