Iron-based powder metallurgy self-lubricating material, preparation method and heating charge pad slide plate using the material

Abstract

The invention discloses an iron-based powder metallurgy self-lubricating material, which comprises the following components: manganese 10-12.4%; sulfur 14.12-17.71%; chromium 7.82-9.15%; nickel 2.91-3.84%; molybdenum 0.91-3.04%; Graphite 2.1-5.1%, oxygen 1.8-2.36%, and the rest is iron, the above are mass percentages. The invention also discloses a preparation method of the iron-based powder metallurgy self-lubricating material and a heating charge pad slide plate using the material; the invention can ensure its self-lubricating property between 500-650°C and has higher strength , moderate hardness and toughness and low expansion coefficient can meet the needs of preset working conditions, prolong the service life and reduce production costs.

Description

technical field

[0001] The invention relates to an iron-based powder metallurgy self-lubricating material, a preparation method and a heating charge pad slide plate using the material. Background technique

[0002] At present, the aluminum slab heating furnace in the aluminum processing industry is transported by the material cushion slider supported on the guide rail. The material cushion slider moves on the guide rail and carries the aluminum slab. They pass through the heating furnace and are heated to The rolling temperature is about 650°C; the existing pad slide includes a slide base and several inserts. The slide base is provided with more than one stepped mounting hole and several insert holes, and each insert hole has a Cylindrical insert, the cylindrical insert and the insert hole are in an interference fit; when in use, the aluminum slab is placed on several pad slides, and the insert is in contact with the guide rail; therefore, the insert requires a certain degre...

Examples

Embodiment 1

[0018] An iron-based powder metallurgy self-lubricating material, including the following components: 10% manganese; 17.71% sulfur; 8.65% chromium; 2.91% nickel; 3.04% molybdenum; is the mass percentage;

[0019] The preparation method of the above-mentioned iron-based powder metallurgy self-lubricating material includes the following steps: A) mixing materials: manganese sulfide powder, iron sulfide powder, ferric oxide powder, chromium powder, nickel powder, molybdenum powder, graphite powder and iron powder Mix uniformly in the ball mill for 4-6 hours according to the above-mentioned component distribution ratio, wherein the particle size of graphite is 50 mesh, the particle size of ferric oxide and iron powder is 200 mesh, the particle size of nickel powder is 225 mesh, and the particle size of other powder materials is 250 mesh; B) Pressing: put the mixed powder into a forming mold and press, the pressure is 35t, the holding time is 2 minutes, and the blank is obtained; C...

Embodiment 2

[0021] An iron-based powder metallurgy self-lubricating material, including the following components: 12.4% manganese; 16.31% sulfur; 7.82% chromium; 3.84% nickel; 2.06% molybdenum; is the mass percentage;

[0022] The preparation method of the above-mentioned iron-based powder metallurgy self-lubricating material includes the following steps: A) mixing materials: manganese sulfide powder, iron sulfide powder, ferric oxide powder, chromium powder, nickel powder, molybdenum powder, graphite powder and iron powder Mix uniformly in the ball mill for 4-6 hours according to the above-mentioned component distribution ratio, wherein the particle size of graphite is 100 mesh, the particle size of ferroferric oxide and iron powder is 100 mesh, the particle size of nickel powder is 200 mesh, and the particle size of other powders is 300 mesh; B) Pressing: Put the mixed powder into the forming mold and press, the pressure is 40t, the holding time is 1 minute, and the blank is obtained; C...

Embodiment 3

[0024] An iron-based powder metallurgy self-lubricating material, including the following components: 11.2% manganese; 14.12% sulfur; 9.15% chromium; 3.36% nickel; 0.91% molybdenum; is the mass percentage;

[0025] The preparation method of the above-mentioned iron-based powder metallurgy self-lubricating material includes the following steps: A) mixing materials: manganese sulfide powder, iron sulfide powder, ferric oxide powder, chromium powder, nickel powder, molybdenum powder, graphite powder and iron powder Mix uniformly in the ball mill for 4-6 hours according to the above component distribution ratio, wherein the particle size of graphite is 75 mesh, the particle size of ferroferric oxide and iron powder is 150 mesh, the particle size of nickel powder is 250 mesh, and the particle size of other powders is 260 mesh; B) Pressing: put the mixed powder into a forming mold and press, the pressure is 40t, the holding time is 1 minute, and the blank is obtained; C) Sintering: ...

technical field

[0001] The invention relates to an iron-based powder metallurgy self-lubricating material, a preparation method and a heating charge pad slide plate using the material. Background technique

[0002] At present, the aluminum slab heating furnace in the aluminum processing industry is transported by the material cushion slider supported on the guide rail. The material cushion slider moves on the guide rail and carries the aluminum slab. They pass through the heating furnace and are heated to The rolling temperature is about 650°C; the existing pad slide includes a slide base and several inserts. The slide base is provided with more than one stepped mounting hole and several insert holes, and each insert hole has a Cylindrical insert, the cylindrical insert and the insert hole are in an interference fit; when in use, the aluminum slab is placed on several pad slides, and the insert is in contact with the guide rail; therefore, the insert requires a certain degre...

Examples

Embodiment 1

[0018] An iron-based powder metallurgy self-lubricating material, including the following components: 10% manganese; 17.71% sulfur; 8.65% chromium; 2.91% nickel; 3.04% molybdenum; is the mass percentage;

[0019] The preparation method of the above-mentioned iron-based powder metallurgy self-lubricating material includes the following steps: A) mixing materials: manganese sulfide powder, iron sulfide powder, ferric oxide powder, chromium powder, nickel powder, molybdenum powder, graphite powder and iron powder Mix uniformly in the ball mill for 4-6 hours according to the above-mentioned component distribution ratio, wherein the particle size of graphite is 50 mesh, the particle size of ferric oxide and iron powder is 200 mesh, the particle size of nickel powder is 225 mesh, and the particle size of other powder materials is 250 mesh; B) Pressing: put the mixed powder into a forming mold and press, the pressure is 35t, the holding time is 2 minutes, and the blank is obtained; C...

Embodiment 2

[0021] An iron-based powder metallurgy self-lubricating material, including the following components: 12.4% manganese; 16.31% sulfur; 7.82% chromium; 3.84% nickel; 2.06% molybdenum; is the mass percentage;

[0022] The preparation method of the above-mentioned iron-based powder metallurgy self-lubricating material includes the following steps: A) mixing materials: manganese sulfide powder, iron sulfide powder, ferric oxide powder, chromium powder, nickel powder, molybdenum powder, graphite powder and iron powder Mix uniformly in the ball mill for 4-6 hours according to the above-mentioned component distribution ratio, wherein the particle size of graphite is 100 mesh, the particle size of ferroferric oxide and iron powder is 100 mesh, the particle size of nickel powder is 200 mesh, and the particle size of other powders is 300 mesh; B) Pressing: Put the mixed powder into the forming mold and press, the pressure is 40t, the holding time is 1 minute, and the blank is obtained; C...

Embodiment 3

[0024] An iron-based powder metallurgy self-lubricating material, including the following components: 11.2% manganese; 14.12% sulfur; 9.15% chromium; 3.36% nickel; 0.91% molybdenum; is the mass percentage;

[0025] The preparation method of the above-mentioned iron-based powder metallurgy self-lubricating material includes the following steps: A) mixing materials: manganese sulfide powder, iron sulfide powder, ferric oxide powder, chromium powder, nickel powder, molybdenum powder, graphite powder and iron powder Mix uniformly in the ball mill for 4-6 hours according to the above component distribution ratio, wherein the particle size of graphite is 75 mesh, the particle size of ferroferric oxide and iron powder is 150 mesh, the particle size of nickel powder is 250 mesh, and the particle size of other powders is 260 mesh; B) Pressing: put the mixed powder into a forming mold and press, the pressure is 40t, the holding time is 1 minute, and the blank is obtained; C) Sintering: ...

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