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A kind of production method of metal tin powder suitable for diamond tools

A diamond tool and production method technology, applied in the metallurgical field, can solve the problems of easy agglomeration, heavy metal poisoning, easy oxidation and deterioration of tin powder and tin powder, and achieve the effects of improving the working environment, reducing the cost, and achieving significant economic benefits.

Active Publication Date: 2016-08-24
CHONGQING YOUYAN ZHONGYE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the metal tin powder produced by the atomization method is easily oxidized and deteriorated when exposed to the air, vacuum packaging is used, but the products produced under the existing production technology conditions have the following problems: 1. Vacuum packaging is prone to various leaks 2. Due to the difference in internal and external pressure in vacuum packaging, tin powder and tin powder are easy to agglomerate; 3. The reprocessing of oxidized and agglomerated powder will increase a lot of cost, and at the same time, the volatilization and flying of powder will cause Metal loss, volatilization and flying can also easily cause heavy metal poisoning

Method used

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  • A kind of production method of metal tin powder suitable for diamond tools
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Experimental program
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Effect test

Embodiment 1

[0017] A kind of production method of metallic tin powder, carry out according to the following steps:

[0018] a. Dissolve in a metal melting furnace to obtain a metal tin liquid flow, and the temperature of the molten tin liquid is controlled at 355-363 °C;

[0019] b. The metal tin liquid flow diameter added in the atomization process is 1.8~2.3mm; the pressure is 0.7~0.8Mpa, the gas flow is 8.0~9.2m 3 The high-pressure air of / min is fed into the atomizing equipment to atomize the metal tin liquid flow, and simultaneously feeds the benzotriazole additive, and the added amount of the benzotriazole additive accounts for 10% of the metal liquid flow weight entering the atomizing equipment 0.035%~0.05%, the adding temperature of the benzotriazole additive is 264~275°C, and the pressure is 0.8~0.95 standard atmospheric pressure;

[0020] c. Cool to normal temperature and collect powder;

[0021] d. Sieved, packaged into bags for standby or for sale.

[0022] The above method...

Embodiment 2～6

[0023] Embodiment 2~6: Produce metal powder according to following steps and process, all the other are the same as embodiment 1.

[0024]

[0025] The metal tin powder prepared by the above method has an oxidative deterioration rate of only 1.5-4.5%, is conventionally packaged, and has remarkable economic benefits; and the preparation process has good safety.

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Abstract

The invention provides a production method of metal tin powder suitable for a diamond tool. The production method of the metal tin powder suitable for the diamond tool comprises the steps of metal melting and atomization. Temperature of melting tin liquid is controlled 350-370 DEG C in the process of the metal melting. A benzotriazole additive is added in the process of atomization, and addition is 0.02%-0.07% of weight of metal tin liquid after melting. High pressure air airflow is controlled within 8-9.2 cubic meters\min in the process of the atomization. An additive is selected in the process of producing the metal tin powder in an atomization method, and a protective layer of preventing oxidation and blocking is formed on a surface of the metal tin powder through gasification of the additive by using features of the additive, interaction of the additive and metal and beneficial environment of atomization. Tin powder products utilize regular packing, an oxidation deteriorating rate of the metal tin powder products can be controlled within 0.5%-4.5%, production cost is reduced effectively by using the regular packing, safety of a production system is good, a refund rate is reduced largely, and economic benefit is obvious.

Description

technical field [0001] The invention relates to a production method of metal powder, in particular to an atomization production method of metal tin powder suitable for diamond tools, and belongs to the technical field of metallurgy. Background technique [0002] At present, the production of metal tin powder adopts the gas atomization method, and its basic production process is: the first step, the melting of the metal, the melting temperature is 50 ° C to 100 ° C higher than the melting point of the metal; the second step, in the atomization equipment, using 0.3MP~1.2MP high-pressure air atomizes the metal liquid flow to produce powder that meets the corresponding specifications and requirements; the third step is to cool and collect the powder; the fourth step is to sieve the cooled powder; the fifth step is to vacuum the product Package. [0003] Since the metal tin powder produced by the atomization method is easily oxidized and deteriorated when exposed to the air, vac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08
Inventor 陈林吴卫莫正彬
Owner CHONGQING YOUYAN ZHONGYE NEW MATERIAL