Corrosion and wear resistant alloy

A wear-resistant and corrosion-resistant technology, applied in the field of tool steel alloy products, can solve problems such as corrosion resistance is not helpful

Active Publication Date: 2006-11-15
CRUCIBLE IND LLC
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Problems solved by technology

The stated bound chromium does not contribute to corrosion resistance

Method used

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  • Corrosion and wear resistant alloy
  • Corrosion and wear resistant alloy
  • Corrosion and wear resistant alloy

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Embodiment Construction

[0023] Chemical Composition Test

[0024] Table 1 presents the chemical compositions tested experimentally to achieve the improved combination of corrosion resistance and wear resistance of the alloy articles of the present invention. The reported alloys 03-192 to 04-099 are obtained according to the present invention.

[0025] All examined composites were made using the Crucible Particle Metallurgy (CPM) technique. Each grade of pre-alloyed tool steel of different chemical composition given was melted in a nitrogen atmosphere, atomized with nitrogen gas, and hot isostatic pressed (HIP) at a temperature of 2150°F and a pressure of 14.5 ksi for four hours.

[0026] The various alloying elements involved in the wear and corrosion resistant tool steel satisfy the following conditions.

[0027] Carbon is present in an amount of at least 2.0%, although a maximum amount of carbon can be equal to 3.5%, and is preferably between 2.7% and 3.0%. It is important to carefully control t...

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Abstract

A powder metallurgy corrosion and wear resistant tool steel article, and alloy thereof. The article is manufactured by hot isostatic compaction of nitrogen atomized, prealloyed high-chromium, high-vanadium, high-niobium powder particles. The alloy is characterized by very high wear and corrosion resistance, making it particularly useful for use in the manufacture of components for advanced bearing designs as well as machinery parts exposed to severe abrasive wear and corrosion conditions, as encountered, for example, in the plastic injection molding industry and food industry.

Description

field of invention [0001] The invention relates to a corrosion-resistant and wear-resistant tool steel alloy product of powder metallurgy. The product is obtained by hot isostatic pressing molding of high-chromium, high-vanadium and high-niobium powder particles pre-alloyed by nitrogen atomization. The alloys of the articles of the invention are characterized by very high wear and corrosion resistance, which makes them particularly suitable for use in manufacture exposed to severe wear and corrosion conditions such as those experienced in the plastic injection molding industry and the food industry, etc. Conditions) for parts in advanced bearing arrangements and materials for mechanical components. Background technique [0002] Alloys used in many demanding applications such as screws and barrels in the plastic injection molding industry must be resistant to wear and corrosion in order to perform satisfactorily. There is an increasing trend in industrial process parameters ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/30
CPCC22C33/0285C22C38/001C22C38/22C22C38/24C22C38/26C22C38/30C22C38/36
Inventor 阿洛伊兹·卡季尼克安杰伊·L·沃伊切茨斯基玛丽亚·K·沙沃德
Owner CRUCIBLE IND LLC
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