Tin bronze lining and preparation method thereof

A technology of tin bronze and bushing, applied in the field of tin bronze bushing and its preparation, can solve the problems of relying on the heat absorption capacity of metal molds, limited, etc., and achieve the effects of low production cost, reasonable casting process and good quality

Inactive Publication Date: 2018-11-06
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

However, there are certain limitations in the production of high-lead bronzes using common metal molding methods.
Especially for castings with relatively thick wall thickness and relatively large products, the effect of ordinary metal molds on preventing segregation will be limited. In order to accelerate cooling and reduce segregation, we cannot completely rely on the heat absorption capacity of metal molds

Method used

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  • Tin bronze lining and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a tin bronze bushing, which is mainly made of the following raw materials in weight percentage: Sn9%, Pb2.5%, Ni0.6%, Zn2%, Si0.3%, Cu balance.

[0025] The preparation method of described tin bronze bushing, it comprises the following steps:

[0026] Step a, copper alloy smelting; the copper alloy smelting is to weigh Sn, Pb, Ni, Si and Cu according to the process ratio and put them into the furnace for heating, and the heating temperature is controlled at 1200 ° C, so that the furnace charge is melted into copper alloy liquid;

[0027] Step b, deoxidation treatment; the deoxidation treatment is to add 0.08% phosphor copper of the total weight of the molten copper alloy liquid in the molten copper alloy liquid obtained in step a, and carry out uniform stirring by injecting nitrogen to implement deoxidation treatment;

[0028] Step c, mold preheating; the mold preheating is to preheat the casting outer mold and the metal core casting inner mold, ...

Embodiment 2

[0033] The invention provides a tin bronze bushing, which is mainly made of the following raw materials in weight percentage: Sn8.2%, Pb3%, Ni0.5%, Zn1%, Si0.5%, Cu balance.

[0034] The preparation method of this embodiment is the same as that of Example 1.

Embodiment 3

[0036] The invention provides a tin bronze bushing, which is mainly made of the following raw materials in weight percentage: Sn8.4%, Pb2.8%, Ni0.6%, Zn1.2%, Si0.4%, Cu balance .

[0037] The preparation method of this embodiment is the same as that of Example 1.

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Abstract

The invention relates to a tin bronze lining and a preparation method thereof. The tin bronze lining is mainly prepared from, by weight, 12-20% of Sn, 1-3% of Pb, 0.5-1% of Ni, 0.2-0.5% of Si and thebalance of Cu. Specific casing steps include: copper alloy smelting, deoxidation treatment, casing die preheating, casing pouring, casting cooling, and removing of a casting head to obtain a high-leadbronze lining. The preparation method has the advantages of reasonable process, low production cost and high quality of the produced copper lining.

Description

technical field [0001] The invention belongs to the technical field of bronze bushing casting, and in particular relates to a tin bronze bushing and a preparation method thereof. Background technique [0002] The existing lead bronzes include 10-10 lead bronze, 15-8 lead bronze, 7-4-4 lead bronze, 20-5 lead bronze and 30 lead bronze in the national standard GB / T1176-1987. Among them, 20-5 lead bronze and 30 lead bronze belong to high lead bronze. High-lead bronze copper sleeves are commonly used in large-scale crushing equipment with high load and high speed, because high-lead bronze has a small friction coefficient and good wear resistance; it has a long fatigue life and is not easy to crack under impact. It is an important shaft sleeve that withstands high pressure, high speed and impact; the material of this type of copper sleeve is usually 20-5 lead bronze, or 30 lead bronze such as high lead bronze. Due to the low mechanical properties of 30 lead bronze, it cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/02C22C1/02C22C1/06B22D27/04F16C33/12F16C33/14
CPCC22C9/02B22D27/04C22C1/02C22C1/06F16C33/121F16C33/14F16C2204/12F16C2220/06
Inventor 王小勇马海宽张春光周延军赵喜成赵纪愿马海芳马辰李保香马全明韩凯民
Owner 新乡市海山机械有限公司
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