Engine cooling water pipe and preparing process thereof

A technology of engine cooling and preparation process, which is applied in the direction of engine cooling, engine components, machines/engines, etc. It can solve the problem of alloy steel tensile strength, yield strength, corrosion resistance, product performance such as strength and hardness Insufficient, numerous procedures and other problems, to achieve the effect of mature preparation method, easy microstructure, and reduce processing procedures

Active Publication Date: 2018-01-19
宁波名古屋工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional processing method not only has many procedures, but also lacks in product performance such as strength and hardness.
[0005] Aiming at the shortcomings of traditional alloy steel such as low hardness and non-wear resistance, Publication No. 106244936A discloses a method to improve the strength, hardness and wear resistance of the product by increasing the content of carbon, chromium and molybdenum in the alloy ball.
However, simply increasing the content of some elements in the alloy cannot solve the tensile strength, yield strength, corrosion resistance and reduce the impurity elements in the steel.

Method used

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  • Engine cooling water pipe and preparing process thereof
  • Engine cooling water pipe and preparing process thereof
  • Engine cooling water pipe and preparing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Milling: Weigh the raw materials according to the engine cooling water pipe composition and mass percentage in claim 1 or 2, containing Be: 2%, Zr: 0.6%, C: 0.05%, Si: 0.5%, Cr: 0.7%, Ni: 4%, the balance is Fe and impurities, and Ni is weighed in proportion to NiCl 2 ·6H 2 O. will remove NiCl 2 ·6H 2 Various raw materials other than O were processed into powders with a particle size of 3 μm by jet milling.

[0035] Coating powder: NiCl·6H 2 O and H 3 BO 3 Mix according to 10:1, add distilled water until completely dissolved, then slowly add iron powder into the solution and stir, while adding hydrochloric acid to induce displacement reaction, nickel will form a coating layer on the surface of iron powder. The pH of the solution was controlled to be 4, and the temperature was maintained at 75°C. After the reaction coating was completed, the solution was poured out and filtered, and the obtained powder was dried and reduced at 450° C. for 15 minutes under a hydrog...

Embodiment 2-3

[0040] The only difference from Example 1 is that the particle diameters of the raw materials in Examples 2-3 are 4 μm and 5 μm, respectively.

Embodiment 4-7

[0042] The only difference from Example 1 is that the contents of Be in the raw materials of Examples 4-7 are 0.2%, 0.5%, 1%, and 1.5%, respectively.

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Abstract

The invention discloses an engine cooling water pipe and a preparing process thereof, and belongs to the technical field of powder metallurgy. The engine cooling water pipe comprises, by percentage composition, 0.2%-2% of Be, 0.3%-0.6% of Zr, 0.01%-0.1% of C, 0.4%-0.8% of Si, 0.5%-1% of Cr, 2%-4% of Ni and the balance Fe and impurities. By means of the Be and the Zr in raw materials, the contentsof impurity elements including P, S, O and N in the product can be greatly reduced, and steel tools can be higher in temperature strength, creep property and low temperature toughness. Meanwhile, in cooperation with a powder coating process, the Ni is evenly distributed in a shallow layer of steel, the even microscopic structure is easily obtained during sintering, and improving of the corrosion resistance of the product is facilitated.

Description

technical field [0001] The invention relates to an engine cooling water pipe, in particular to a powder metallurgy engine cooling water pipe and a preparation process thereof, and belongs to the technical field of powder metallurgy. Background technique [0002] Powder metallurgy is a process technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. Powder metallurgy includes powder making and products. Among them, milling is mainly a metallurgical process, which is consistent with the literal meaning. However, powder metallurgy products often go far beyond the scope of materials and metallurgy, and are often interdisciplinary (materials and metallurgy, machinery and mechanics, etc.) technologies. In particular, modern metal powder 3D printing integrates mechanical engineering, CAD, reverse engineeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/50C22C38/02C22C33/02B22F1/02B22F3/02B22F3/10B22F3/24C23C8/18F01P11/04
Inventor 董阿能
Owner 宁波名古屋工业有限公司
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