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Anti-segregation refining agent for casting high-lead bronze and production method thereof

A production method and anti-segregation technology, applied in the field of anti-segregation refining agent for casting high-lead bronze, to achieve the effects of stable and uniform composition, clean surface and good mechanical properties

Active Publication Date: 2018-02-27
新乡市海山机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiency of preventing segregation by only relying on strong stirring and rapid cooling in the existing casting process, and to provide an anti-segregation refining agent for casting high-lead bronze and its production method. To prevent lead segregation, make the lead particles in high-lead bronze castings evenly distributed, the metallographic grains are fine, and the casting structure is dense, so as to meet the needs of the market and foundry companies, and effectively improve the quality of bronze castings in my country

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, an anti-segregation refining agent for casting high-lead bronze, the composition of the anti-segregation refining agent for casting high-lead bronze is: nickel Ni15%, phosphorus P10%, rare earth lanthanum La element 30%, zinc Zn5%, silicon Si6.8%, magnesium Mg0.28%, titanium Ti0.10%, iron Fe ≤0.10%, manganese Mn ≤0.05%, total impurity content <1.0%, and the balance is copper.

[0036] The production method of the described anti-segregation refining agent for casting high-lead bronze, its specific technological process is as follows:

[0037] A. Add electrolytic copper plate and electrolytic nickel plate to the intermediate frequency furnace. The purity of copper plate and nickel plate is required to be not less than 99.99%. The weight ratio is 45% for nickel and copper, and then add 10% of industrial metal silicon;

[0038] B. Heating and melting at a temperature of 1300-1350°C;

[0039] C. Sprinkle an appropriate amount of covering agent to reduce oxida...

Embodiment 2

[0056]Embodiment 2, the production methods of this embodiment and embodiment 1 are basically the same, and the similarities will not be repeated. The difference is: an anti-segregation refining agent for casting high-lead bronze, and the anti-segregation refining agent for casting high-lead bronze The composition by weight percentage is: nickel Ni16%, phosphorus P11%, rare earth rhenium Re element 32%, zinc Zn6%, silicon Si7.2%, magnesium Mg0.33%, titanium Ti0.15%, iron Fe≤0.10% , manganese Mn ≤0.05%, the total impurity content <1.0%, and the balance is copper.

Embodiment 3

[0057] Embodiment 3, the production methods of this embodiment and embodiment 1 are basically the same, and the similarities will not be repeated. The difference is: an anti-segregation refining agent for casting high-lead bronze, and the anti-segregation refining agent for casting high-lead bronze The composition by weight percentage is: nickel Ni16%, phosphorus P11%, rare earth cerium Ce element 32%, zinc Zn6%, silicon Si6.8%, magnesium Mg0.30%, titanium Ti0.12%, iron Fe≤0.10% , manganese Mn ≤0.05%, the total impurity content <1.0%, and the balance is copper.

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Abstract

The invention discloses an anti-segregation refining agent for casting high-lead bronze. The anti-segregation refining agent for casting high-lead bronze is composed of, by weight, 15-16% of Ni, 10-11% of P, 30-32% of rare earth elements, 5-6% of Zn, 6.8-7.2% of Si, 0.28-0.33% of Mg, 0.10-0.15% of Ti, 0.10% or less of Fe, 0.05% or less of Mn, less than 1.0% of impurities and the balance Cu. Oxidative slagging is reduced by spraying a covering agent after precise matching, high-purity nitrogen and refining agent powder spraying are adopted for powder spraying refining, and ingredients are adjusted through supplementing or diluting, so that the lead segregation phenomenon is avoided, a high-lead bronze casting is uniform in lead granule distribution, fine in metallographic grain and tight in structure, the requirements of markets and casting enterprises are met, and the quality of bronze castings in China is effectively improved.

Description

Technical field: [0001] The invention relates to an anti-segregation refining agent for casting high-lead bronze and a production method thereof, which is used for casting high-lead bronze castings, thereby preventing the refining process of lead segregation. Background technique: [0002] Anti-segregation refining agent is the main refining agent and auxiliary additive used in casting high-lead bronze. After precise proportioning, grinding, drying, mixing and other processes, the product requires a moisture content of less than 0.1% and a fineness of 300-400 mesh. [0003] With the development of ultra-large-scale equipment in the global mining industry, the requirements for the wear resistance of copper bushings inside the equipment are getting higher and higher, and the wear resistance advantages of high-lead bronze bushings are becoming more and more prominent. The production technology of the sleeve is controlled by developed countries. The distribution of lead particl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C9/00
CPCC22C1/06C22C9/00
Inventor 马海宽王小勇丁明骏
Owner 新乡市海山机械有限公司
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