CN111411259A - Preparation method of oilless bearing material - Google Patents
Preparation method of oilless bearing material Download PDFInfo
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- CN111411259A CN111411259A CN202010114201.XA CN202010114201A CN111411259A CN 111411259 A CN111411259 A CN 111411259A CN 202010114201 A CN202010114201 A CN 202010114201A CN 111411259 A CN111411259 A CN 111411259A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
Abstract
The invention provides a preparation method of an oilless bearing material, which comprises the following steps: copper Cu, tin Sn, zinc Zn, lead Pb, phosphorus P, nickel Ni, aluminum Al, iron Fe, manganese Mn, silicon Si, antimony Sb and sulfur S, wherein the weight percentage of Cu: 62-65, Sn and unavoidable impurities: less than or equal to 0.2, Pb and inevitable impurities: less than or equal to 0.2, and relates to the field of oilless bearings. The preparation method of the oilless bearing material analyzes and researches the performances of various materials, analyzes the problems of the oilless bearing existing under various working conditions, obtains the special copper alloy bearing material capable of stably working aiming at various working conditions through hard experiments, thereby effectively solving the problems that the materials required by the common oilless bearing are more, and the oilless bearing with more performance requirements has disordered materials during production, is difficult to control, has undefined performance of a processed finished product, and influences the performance of the oilless bearing to a certain extent.
Description
Technical Field
The invention relates to the technical field of oilless bearings, in particular to a preparation method of an oilless bearing material.
Background
The oilless bearing is also called as a solid lubrication bearing, the oilless bearing is a part for fixing and reducing the load friction coefficient in the mechanical transmission process, the metal substrate bears most of load in the friction process, and the metal substrate directly bears the load, so that the material formula directly determines the performance and the use environment of the bearing.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a preparation method of an oilless bearing material, which solves the problems that the material needed by a common oilless bearing is more, the oilless bearing with more performance requirements is disordered and difficult to control in production, the performance of a processed finished product is not clear, and the performance of the oilless bearing is influenced to a certain extent.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a preparation method of an oilless bearing material comprises the following steps: copper Cu, tin Sn, zinc Zn, lead Pb, phosphorus P, nickel Ni, aluminum Al, iron Fe, manganese Mn, silicon Si, antimony Sb and sulfur S.
Preferably, taking the ratio of Cu: 62-65, Sn and unavoidable impurities: less than or equal to 0.2, Pb and inevitable impurities: less than or equal to 0.2, Ni: 3 and some unavoidable impurities, Al: 4.5-6, Fe: 2-3, Mn: 2-4, Si and unavoidable impurities: less than or equal to 0.2, Zn: the balance is supplemented according to the percentage, and the total amount of impurities is less than or equal to 2.5.
Preferably, taking the following components in percentage: 4-5, Zn: 4-6, Pb: 4-5, P and unavoidable impurities: less than or equal to 0.08, Ni: 2 or less and some unavoidable impurities, Al and unavoidable impurities: 0.01 or less, Fe and inevitable impurities: 0.02% or less, Si and inevitable impurities: 0.01% or less, Sb and inevitable impurities: 0.1% or less, S and inevitable impurities: less than or equal to 0.1 percent, the balance being supplemented by Cu according to percentage, and the total amount of impurities being less than or equal to 1.5.
Preferably, the following components are taken in percentage: sn: 9-11.5, Zn and unavoidable impurities: 0.04% or less, Pb and inevitable impurities: less than or equal to 0.2, P: 0.5-0.8, Ni and unavoidable impurities: less than or equal to 0.1, Al and inevitable impurities: 0.01 or less, Fe and inevitable impurities: less than or equal to 0.01, Mn and inevitable impurities: 0.05 or less, Si and unavoidable impurities: 0.03% or less, Sb and inevitable impurities: 0.05 or less, S and inevitable impurities: less than or equal to 0.05 percent, the balance being supplemented by Cu according to percentage, and the total amount of impurities being less than or equal to 0.7.
Preferably, the Cu, Sn, Pb, Ni, Al, Mn and Zn obtained in proportion are uniformly mixed in a container, then the mixture is melted at high temperature, the heating temperature is controlled to be 1183-1120 ℃, the metal solution is processed by a sand casting process to obtain a bearing blank, then gravel is removed, the bearing blank is cooled to room temperature, a surface oxidation layer is removed, and surface grinding, deburring and chamfering treatment are carried out to obtain the bearing material.
Preferably, Sn, Zn, P, Ni, Al, Fe, Si, Sb, S and Cu obtained in proportion are uniformly mixed in a container, then are melted at high temperature, the heating temperature is controlled to be 1183-1120 ℃, the metal solution is processed by a metal mold casting process to obtain a bearing blank, the bearing blank is cooled to room temperature, a surface oxide layer is removed, and surface grinding, deburring and chamfering are carried out to obtain the bearing material.
Preferably, Sn, Pb, P, Al, Fe, Mn, Si, Sb, S and Cu which are obtained in proportion are uniformly mixed in a container, then are melted at high temperature, the heating temperature is controlled to be 1183-1120 ℃, and the metal solution is subjected to a continuous casting process to obtain the bearing material.
(III) advantageous effects
(1) The copper alloy solid lubrication bearing is cast and processed by selecting the copper block, the tin ingot, the lead bar, the nickel block, the aluminum bar, the manganese block and the zinc ingot and adopting a sand casting process, has high mechanical property, better corrosion resistance, stress corrosion cracking tendency, strong wear resistance, good air permeability, convenient heat dissipation and long-term use.
(2) According to the invention, the copper alloy solid lubrication bearing obtained by selecting the tin ingot, the zinc ingot, the phosphorus block, the nickel block, the aluminum strip, the iron block, the silicon block, the antimony block, the sulfur block and the copper block through the metal mold casting process has good corrosion resistance, good casting performance and air tightness, is suitable for working under the working conditions of high load and medium sliding speed, is wear-resistant and corrosion-resistant, is easy to process, can be produced quickly, and is economical and practical.
(3) The copper alloy solid lubrication bearing obtained by selecting the tin ingot, the lead bar, the phosphorus block, the aluminum bar, the iron block, the manganese block, the silicon block, the antimony ingot, the sulfur block and the copper block through the continuous casting process has high hardness, excellent wear resistance, difficult seizure phenomenon, good corrosion resistance in atmosphere and fresh water and can be used under the working conditions of high load and high sliding speed.
(4) The invention analyzes and researches the performance of various materials, analyzes the problems of the oilless bearing under various working conditions, and obtains the special copper alloy bearing material which can stably work aiming at various working conditions through hard experiments, thereby effectively solving the problems that the common oilless bearing needs more materials, the oilless bearing with more performance requirements has disordered materials during production, is not easy to control, has undefined performance of the processed finished product and influences the performance of the oilless bearing to a certain extent.
Drawings
FIG. 1 is a schematic view of the mechanical properties of the bearing material of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a preparation method of an oilless bearing material, which comprises the following steps: .
Step 1: copper Cu, tin Sn, zinc Zn, lead Pb, phosphorus P, nickel Ni, aluminum Al, iron Fe, manganese Mn, silicon Si, antimony Sb, and sulfur S were prepared.
Step 2: taking copper blocks according to the proportion: 62-65, tin ingot and inevitable impurities: less than or equal to 0.2, lead bars and inevitable impurities: less than or equal to 0.2, nickel block: 3 or less and some inevitable impurities, aluminum bars: 4.5-6, iron blocks: 2-3, manganese blocks: 2-4, silicon lumps and unavoidable impurities: less than or equal to 0.2, zinc ingot: the balance is supplemented according to the percentage, and the total amount of impurities is less than or equal to 2.5.
And step 3: uniformly mixing copper blocks, tin ingots, lead bars, nickel blocks, aluminum bars, manganese blocks and zinc ingots which are obtained in proportion in a container, then melting at high temperature, controlling the heating temperature at 1183-1120 ℃, processing the metal solution by a sand casting process to obtain a bearing blank, then removing gravels, cooling to room temperature, removing a surface oxide layer, and carrying out surface grinding, deburring and chamfering treatment to obtain the bearing material.
Through the above steps, the tensile strength σ b (mpa): more than or equal to 725; yield strength σ (MPa): not less than 380; elongation 5 (%): not less than 10; hardness (HB): the ZCuZn25Al6Fe3Mn3 copper alloy solid lubrication bearing with the thickness being equal to or larger than 1570HB has the advantages of high mechanical property, good corrosion resistance, stress corrosion cracking tendency, strong wear resistance, good air permeability, convenience in heat dissipation and long-term sustainable use.
Example 2
The embodiment provides a preparation method of an oilless bearing material, which comprises the following steps: .
Step 1: copper Cu, tin Sn, zinc Zn, lead Pb, phosphorus P, nickel Ni, aluminum Al, iron Fe, manganese Mn, silicon Si, antimony Sb, and sulfur S were prepared.
Step 2: taking tin ingots according to the proportion: 4-5, zinc ingot: 4-6, lead strip: 4-5, phosphorus lumps and unavoidable impurities: less than or equal to 0.08 percent, nickel block: 2 or less and some inevitable impurities, aluminium bars and inevitable impurities: less than or equal to 0.01, iron blocks and inevitable impurities: less than or equal to 0.02, silicon blocks and inevitable impurities: not more than 0.01, antimony ingot and inevitable impurities: less than or equal to 0.1, sulfur blocks and inevitable impurities: less than or equal to 0.1 percent, the balance of the copper blocks is supplemented according to the percentage, and the total amount of impurities is less than or equal to 1.5.
And step 3: uniformly mixing a tin ingot, a zinc ingot, a phosphorus block, a nickel block, an aluminum strip, an iron block, a silicon block, an antimony ingot, a sulfur block and a copper block which are obtained in proportion in a container, then melting at high temperature, controlling the heating temperature at 1183 and 1120 ℃, processing a metal solution through a metal mold casting process to obtain a bearing blank, cooling to room temperature, removing a surface oxidation layer, and carrying out surface grinding, deburring and chamfering treatment to obtain the bearing material.
Through the above steps, the tensile strength σ b (mpa): not less than 200; yield strength σ (MPa): not less than 90; elongation 5 (%): not less than 13; hardness (HB): the ZCuSn5Pb5Zn5 copper alloy solid lubrication bearing of not less than 590HB has good corrosion resistance, good casting performance and air tightness, is suitable for working under the working conditions of higher load and medium sliding speed, is wear-resistant and corrosion-resistant, is easy to process, can be produced quickly, and is economical and practical.
Example 3
The embodiment provides a preparation method of an oilless bearing material, which comprises the following steps: .
Step 1: copper Cu, tin Sn, zinc Zn, lead Pb, phosphorus P, nickel Ni, aluminum Al, iron Fe, manganese Mn, silicon Si, antimony Sb, and sulfur S were prepared.
Step 2: taking tin ingots according to the proportion: 9-11.5, zinc ingot and inevitable impurities: less than or equal to 0.04, lead bars and inevitable impurities: less than or equal to 0.2, phosphorus blocks: 0.5-0.8, nickel blocks and inevitable impurities: less than or equal to 0.1, aluminum strips and inevitable impurities: less than or equal to 0.01, iron blocks and inevitable impurities: less than or equal to 0.01, manganese blocks and inevitable impurities: 0.05 or less, silicon blocks and inevitable impurities: not more than 0.03, antimony ingot and inevitable impurities: less than or equal to 0.05, sulfur blocks and inevitable impurities: less than or equal to 0.05 percent, the balance of the copper blocks is supplemented according to the percentage, and the total amount of impurities is less than or equal to 0.7.
And step 3: uniformly mixing tin ingots, lead bars, phosphorus blocks, aluminum bars, iron blocks, manganese blocks, silicon blocks, antimony ingots, sulfur blocks and copper blocks which are obtained in proportion in a container, then melting at high temperature, controlling the heating temperature at 1183 and 1120 ℃, and obtaining the bearing material by carrying out continuous casting on the metal solution.
Through the above steps, the tensile strength σ b (mpa): more than or equal to 360; yield strength σ (MPa): more than or equal to 170; elongation 5 (%): not less than 6; hardness (HB): the ZCuSn10Pb1 copper alloy solid lubrication bearing with the hardness of not less than 885HB has high hardness, excellent wear resistance, difficult seizure phenomenon, good corrosion resistance in atmosphere and fresh water, and can be used under the working conditions of high load and high sliding speed.
Claims (7)
1. A preparation method of an oilless bearing material is characterized by comprising the following steps: the preparation method of the oilless bearing material comprises the following steps: copper Cu, tin Sn, zinc Zn, lead Pb, phosphorus P, nickel Ni, aluminum Al, iron Fe, manganese Mn, silicon Si, antimony Sb and sulfur S.
2. A method for preparing an oilless bearing material as claimed in claim 1, wherein: taking Cu according to percentage: 62-65, Sn and unavoidable impurities: less than or equal to 0.2, Pb and inevitable impurities: less than or equal to 0.2, Ni: 3 and some unavoidable impurities, Al: 4.5-6, Fe: 2-3, Mn: 2-4, Si and unavoidable impurities: less than or equal to 0.2, Zn: the balance is supplemented according to the percentage, and the total amount of impurities is less than or equal to 2.5.
3. A method for preparing an oilless bearing material as claimed in claim 1, wherein: taking Sn in percentage: 4-5, Zn: 4-6, Pb: 4-5, P and unavoidable impurities: less than or equal to 0.08, Ni: 2 or less and some unavoidable impurities, Al and unavoidable impurities: 0.01 or less, Fe and inevitable impurities: 0.02% or less, Si and inevitable impurities: 0.01% or less, Sb and inevitable impurities: 0.1% or less, S and inevitable impurities: less than or equal to 0.1 percent, the balance being supplemented by Cu according to percentage, and the total amount of impurities being less than or equal to 1.5.
4. A method for preparing an oilless bearing material as claimed in claim 1, wherein: taking the following components in percentage: sn: 9-11.5, Zn and unavoidable impurities: 0.04% or less, Pb and inevitable impurities: less than or equal to 0.2, P: 0.5-0.8, Ni and unavoidable impurities: less than or equal to 0.1, Al and inevitable impurities: 0.01 or less, Fe and inevitable impurities: less than or equal to 0.01, Mn and inevitable impurities: 0.05 or less, Si and unavoidable impurities: 0.03% or less, Sb and inevitable impurities: 0.05 or less, S and inevitable impurities: less than or equal to 0.05 percent, the balance being supplemented by Cu according to percentage, and the total amount of impurities being less than or equal to 0.7.
5. A method for preparing an oilless bearing material as claimed in claim 2, wherein: the method comprises the following steps: uniformly mixing Cu, Sn, Pb, Ni, Al, Mn and Zn obtained in proportion in a container, then melting at high temperature, controlling the heating temperature at 1183-1120 ℃, processing the metal solution by a sand casting process to obtain a bearing blank, then removing gravel, cooling to room temperature, removing a surface oxidation layer, and carrying out surface grinding, deburring and chamfering treatment to obtain the bearing material.
6. A method for preparing an oilless bearing material as claimed in claim 3, wherein: the method comprises the following steps: uniformly mixing Sn, Zn, P, Ni, Al, Fe, Si, Sb, S and Cu which are obtained in proportion in a container, then melting at high temperature, controlling the heating temperature at 1183-1120 ℃, processing the metal solution by a metal mold casting process to obtain a bearing blank, cooling to room temperature, removing a surface oxidation layer, and carrying out surface grinding, deburring and chamfering treatment to obtain the bearing material.
7. A method for preparing an oilless bearing material as claimed in claim 4, wherein: the method comprises the following steps: uniformly mixing Sn, Pb, P, Al, Fe, Mn, Si, Sb, S and Cu which are obtained in proportion in a container, then melting at high temperature, controlling the heating temperature at 1183-1120 ℃, and obtaining the bearing material by the metal solution through a continuous casting process.
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| CN202010114201.XA CN111411259A (en) | 2020-02-25 | 2020-02-25 | Preparation method of oilless bearing material |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108713063A (en) * | 2016-03-03 | 2018-10-26 | 威兰德-沃克公开股份有限公司 | Stanniferous copper alloy, manufacturing method and application thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108713063A (en) * | 2016-03-03 | 2018-10-26 | 威兰德-沃克公开股份有限公司 | Stanniferous copper alloy, manufacturing method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 中国标准出版社 全国铸造标准化技术委员会编: "《中国机械工业标准汇编 铸造卷（下）》", 30 April 2002, 中国标准出版社 * |
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