Preparation method of CuSn10Bi3.5 copper-bismuth alloy powder

A powder preparation and alloy powder technology, which is applied in the field of CuSn10Bi3.5 copper-bismuth alloy powder preparation, can solve environmental pollution and other problems

Inactive Publication Date: 2013-04-10
PUJIANG HUIKAI POWDER TECH
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned defects in the current prior art, it is necessary to conduct research to provide a solution to solve the defects in the prior art and avoid pollution to the environment caused by lead-containing anti-friction coating materials during manufacture and use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of CuSn10Bi3.5 copper-bismuth alloy powder

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] refer to figure 1 , shows the flow chart of the steps of the CuSn10Bi3.5 copper-bismuth alloy powder preparation method of the embodiment of the present invention, which includes the following steps:

[0019] S1, select copper Cu with a weight percentage of 85-88%, 9-11% tin Sn, and 3-4% bismuth Bi as raw materials, add Cu to a smelting furnace and heat to 1080°C in the atmosphere for melting, and wait After the copper is melted, Sn is added, and Bi is smelted to form an alloy liquid. The smelting temperature is 1100-1120°C, and the smelting time is 15-20 minutes;

[0020] S2. After removing slag on the liquid surface, the composition detection of the alloy liquid is controlled at Cu85-88%, Sn9-11%, Bi3-4%, and the inevitable or unremovable impurities are ≤0.3%. After the composition test is qualified, the temperature is raised to 1150-1180 ℃;

[0021] S3, remove the slag, inject the alloy liquid into the leakage bag, use the free-falling rectangular ring hole nozzle ...

Embodiment 1

[0027] A method for preparing CuSn10Bi3.5 copper-bismuth alloy powder, comprising the following steps:

[0028] (1) Select the raw material weight percentage components as follows: 1# electrolytic copper 86.5%, 1# tin ingot 10%, 99.95# bismuth ingot 3.5%, specifically adopt 0.25T intermediate frequency smelting furnace, take 1# electrolytic copper 216.25Kg, 1# tin ingot 25Kg, 99.95# bismuth ingot 8.75Kg, first add Cu and heat to 1080°C in the atmosphere for melting, then add Sn and Bi for melting to obtain alloy liquid after Cu is melted, the melting temperature is 1100-1120°C, The melting time is 15-20 minutes.

[0029] (2) After the slag removal on the liquid surface of the alloy liquid, the composition detection is controlled at Cu85-88%, Sn9-11%, Bi3-4%, and the inevitable or unremovable impurities are ≤0.3%, and the temperature is raised to 1150-1180 after passing the composition detection ℃.

[0030] (3) Remove the slag, inject the alloy liquid into the leakage bag, an...

Embodiment 2

[0035] A preparation method of CuSn10Bi3.5 copper-bismuth alloy powder, which comprises the following steps:

[0036] (1) The weight percentage of raw materials is selected as follows: 1# electrolytic copper 85%, 1# tin ingot 11%, 99.95# bismuth ingot 4%, the raw material Cu is added to the smelting furnace and heated to 1080 ° C in the atmosphere for melting. After Cu is melted, Sn and Bi are added for smelting, the smelting temperature is 1100-1120°C, and the smelting time is 15-20 minutes.

[0037] (2) After removing slag from the alloy liquid surface, the composition detection is controlled at Cu85-88%, Sn9-11%, Bi3-4%, and the unavoidable or unremovable impurities are ≤0.3%. .

[0038] (3) Remove the slag, inject the alloy liquid into the leakage bag, and use the free-falling rectangular ring hole nozzle to atomize with 4MPa water pressure under the protection of inert gas. The high-pressure water temperature is controlled at 48°C, and the high-pressure water flow crushe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
fluidityaaaaaaaaaa
bulk densityaaaaaaaaaa
Login to view more

Abstract

The embodiment of the invention discloses a preparation method of CuSn10Bi3.5 copper-bismuth alloy powder. The method comprises the following steps of: selecting 85-88 percent by weight of copper, 9-11 percent by weight of tin and 3-4 percent by weight of bismuth, adding the copper into a smelting furnace, heating to 1,080 DEG C in an atmospheric air atmosphere for smelting, adding the tin and the bismuth after smelting, and smelting to form alloy liquid; after detecting that components are qualified, heating to 1,150-1,180 DEG C; removing residues by scooping, injecting the alloy liquid into a stopper ladle, and atomizing by using a free-falling type rectangular annular ring nozzle under the water pressure of 4-5MPa under the protection of inert gas to form alloy powder; dehydrating and drying the alloy powder; and sieving to prepare finished CuSn10Bi3.5 copper-bismuth alloy powder between -150 meshes and +350 meshes. The copper-bismuth alloy powder is prepared by adopting melting and water mist methods, so that the CuSn10Bi3.5 copper-bismuth alloy powder can be taken as a friction reducing coating material in an engine sliding bearing.

Description

technical field [0001] The invention belongs to the technical field of alloy powder preparation, in particular to a method for preparing CuSn10Bi3.5 copper-bismuth alloy powder. Background technique [0002] Copper-lead anti-friction material not only has good anti-friction performance and good anti-seizure performance, but also has high strength and wear resistance, which can better meet the requirements of modern engine bearings. Existing bronze-based self-lubricating materials for automobile bearings often contain a large amount of lead, such as CuPb10Sn10, CuPb24Sn, CuPb24Sn4 and so on. But lead is a poisonous heavy metal, and lead pollution brings great harm to human body and environment. Developed countries have introduced many related regulations, such as the EU Rosh Directive, restricting and prohibiting the use of lead-containing materials. With the development trend of environmental protection, lead-free products are imperative. [0003] In view of the above def...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 吴棕洋张文革
Owner PUJIANG HUIKAI POWDER TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap