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Zinc alloy shot pill

A zinc alloy and shot peening technology, applied in metal processing equipment, abrasives, manufacturing tools, etc., can solve the problems of blackening of the surface of the treated product, affecting product quality, low production efficiency, etc., and achieving low cleaning effect and dust explosion danger. The effect of low performance and extended service life

Active Publication Date: 2010-05-12
连云港倍特金属磨料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low hardness and small specific gravity of aluminum pellets, the treatment effect is not good, and the dust generated by friction is prone to dust explosion problems
Although the possibility of dust explosion using pure zinc shot is low, it is easy to blacken the surface of the processed product, thereby affecting product quality; moreover, the hardness of pure zinc shot is low, and the processing time is long, which affects production efficiency
[0003] At present, both aluminum alloy shot and pure zinc shot are produced by wire drawing and shredding. The production process is long and requires a large production site; and the shot peening produced is cylindrical, not spherical, and the shot peening effect is poor.
In order to obtain spherical products, rounding is required, resulting in low production efficiency

Method used

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  • Zinc alloy shot pill
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 99.8kg Zn (99.99%) in metal melting furnace 1 and carry out smelting, and metal melting furnace also can be various suitable metal melting furnaces, as medium frequency induction furnace. Add 0.1kg Cu ​​(99.99%) and 0.05kg Mg (99.99%) to the molten zinc after the charge is melted, adjust the temperature to 600°C, add 0.05kg Al (99.99%) after it is completely melted, and then pour the molten liquid 2 Pour into a tundish 3 with a dropper, wherein the hole diameter of the dropper 4 is 1.0 mm. The melt disperses and flows down through the dropper at the bottom, and falls into the cooling water tank 5 for rapid cooling. The melt forms spherical zinc alloy shot peening by surface tension and is deposited on the bottom of the tank (7 in the accompanying drawing). Cooling water 6 temperature is 40 ℃. After the particles are taken out, they are dried in a drum drier, or other methods can be used to dry them. After sieving, various zinc alloy shot peenings with required diam...

Embodiment 2

[0029] Add the mixture of 94.5kg Zn (99.99%), 4.0kg Cu ​​(99.99%), 1.0kgMg (99.99%), 0.5kg Al (99.99%) in metal melting furnace 1 and carry out smelting, adjust the temperature to 600 ℃, wait for complete After melting, the molten liquid 2 is poured into a tundish 3 with a dropper, wherein the diameter of the dropper 4 is 1.0 mm. The melt disperses and flows down through the dropper at the lower part, and falls into the cooling water tank 5 . The temperature of the cooling water 6 is 30°C. After the particles are taken out, they are dried and sieved to obtain various zinc alloy shot peening with required diameters. The particle diameter ranges from 0.5-1.5mm, of which 1.0-1.4mm particles account for 65%. It has been determined that the hardness of this zinc alloy shot peening is Hv98.2.

Embodiment 3

[0031] Add a mixture of 86kg Zn and 8kg Cu ​​to the metal melting furnace 1 for smelting, adjust the temperature to 620°C, pour the molten liquid 2 into the tundish 3 with a dropper after it is completely melted, and disperse the downstream through the lower dropper , fall in the cooling water tank 5. Cooling water 6 temperature is 25 ℃. After the particles are taken out, they are dried and sieved to obtain various zinc alloy shot peening with required diameters. The particle diameter ranges from 0.5-1.5mm, of which 1.0-1.4mm particles account for 65%.

[0032] The present invention does not exclude other embodiments of preparing zinc alloy shot peening methods, such as Zn and at least one of Cu, Mg, and Al can be mixed in any combination to prepare zinc alloy shot peening; in the preparation process, Zn , Cu, Mg and Al are weighed in proportion, added and melted in different order, all belong to the scope of the present invention.

[0033] In addition, the present inventio...

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Abstract

The present invention discloses zinc alloy shot for metal surface treatment and its preparation process. The zinc alloy shot is made with Zn and one or several of Cu, Mg and Al. Preferably, the zinc alloy shot is made of Zn, Cu, Mg and Al and has the composition regulated to reach the hardness of Hv 40-150. The preparation process includes smelting, forming shot, drying, sieving and other steps, and the prepared zinc alloy shot has size in the range of 0.1-2.2 mm. The zinc alloy shot is used in deburring, derusting, polishing, etc of metal part, and can form smooth surface.

Description

technical field [0001] The present invention relates to an alloy shot peening for metal surface treatment, in particular to a zinc alloy shot peening for surface treatment such as rust removal and sand removal, surface improvement, and riveting treatment of alloy castings and stainless steel casting products. The invention relates to a preparation method of the zinc alloy shot peening. Background technique [0002] In the field of metal casting, metal surface treatment is an essential process and plays an important role in improving product quality. The metal surface treatment of die-casting, die-casting light alloy and stainless steel casting products includes the removal of burrs, rust removal and polishing, etc., and shot peening (also known as shot blasting) is one of the commonly used methods. At present, the existing spray (throwing) shot includes steel shot, stainless steel shot, aluminum alloy shot and pure zinc shot, and the shot shot of different materials is sele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24C11/00
Inventor 姚家宝王秀梅胡永琪任磊
Owner 连云港倍特金属磨料有限公司