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Composite self-lubricating layer prepared by extrusion water spraying method and preparation method thereof

A technology of self-lubricating layer and composite belt, applied in the direction of coating, etc., can solve the problems of inapplicability, achieve the effect of prolonging the service life, good wear resistance and fatigue resistance, and simplifying the process and steps

Active Publication Date: 2021-07-23
ZHEJIANG SF OILLESS BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] For polymer materials such as polyetheretherketone (PEEK) or polybutylene adipamide (PA46), especially when a thicker self-lubricating layer is required, the traditional wet process is not suitable

Method used

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  • Composite self-lubricating layer prepared by extrusion water spraying method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Preparation of PEEK composite self-lubricating layer

[0066] A weight percentage of the polyether ether ketone 65%, 12% PTFE, 12% carbon fiber, 11% graphite mixed, dried at 130 ℃ under give mix, the mix into the extruder ;

[0067] Powder discharged from the ball strip Unwinder, the system enters the preheating (preheating frequency induction) preheated at 250 deg.] C, to give the powder strip preheated pellets; then passes under the discharge opening extruded, ready to enter the rolling mill; et extrusion mixture after the cover strip into the rolling mill driven by a recombination process;

[0068] The mixture was heated to 370 deg.] C in, until the mixture reaches a half molten state, self-lubricating layer extruded film 1mm thick;

[0069] The self-lubricating-layer film of the blanket to preheat the powder strip on the ball, at 260 ℃ (electric wire temperature) at 1m / min rate of rolling to obtain a composite strip;

[0070] Cooling the composite under conditions tap...

Embodiment 2

[0074] Preparation of polyetheretherketone self-lubricating layer

[0075] A weight percentage of 70% polyether ether ketone, a polyphenylene ester 10%, 10% aramid, 10% molybdenum disulfide, mixed, dried at 130 ℃ under give mix, pressing the mix into the machine;

[0076] Powder discharged from the ball strip Unwinder into preheating system (high-frequency induction preheating) preheated at 365 deg.] C, to give the powder strip preheated pellets; then passes under the discharge opening extruded, ready to enter the rolling mill, mix, etc. after extrusion self-lubricating-layer film covered by the strip entering the rolling mill driven recombination process;

[0077] The mixture was heated to 415 deg.] C in, until the mixture reaches a half molten state, self-lubricating layer extruded film of a thickness of 0.05mm;

[0078] The self-lubricating-layer film of the blanket to preheat the powder strip on the ball, at 315 deg.] C (outside temperature infrared ray) at 3m / min rate of ro...

Embodiment 3

[0083] Preparation of polyetheretherketone self-lubricating layer

[0084] A weight percentage of 50% polyether ether ketone, 20% polytetrafluoroethylene, 18% glass fiber, 12% graphite fluoride, mixed, dried at 130 ℃ under give mix, the mix into extruder;

[0085] Powder discharged from the ball strip Unwinder, the system enters the preheating (preheating infrared radiation) preheated at 300 ℃, to give spherical powder preheated strip, then passes under the discharge opening extruded, ready to enter the rolling mill, extruding the mixture, etc. after the film layer is covered by the lubricating strip entering the rolling mill driven by a recombination process;

[0086] After the mixture was heated to 400 ℃, until the mixture reaches a half molten state, extruded from a 10mm thick lubricating layer film;

[0087] The self-lubricating-layer film of the blanket to preheat the powder strip on the ball, (transfer temperature heating belt) at 300 deg.] C at 10m / min rate of rolling to ...

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Abstract

The invention provides a composite self-lubricating layer prepared by an extrusion water spraying method and a preparation method thereof, belonging to the field of sliding bearings. The invention mixes the polymer powder material and the filler to obtain a mixture; preheats the ball powder belt material to obtain the preheated ball powder belt material; heats the mixture material to a semi-molten state, and extrudes Preheating the ball powder strip material to obtain the strip material covered by the self-lubricating layer film; rolling the strip material covered by the self-lubricating layer film to obtain the composite strip material; spraying the composite strip material to cool down to obtain the composite self-lubricating strip material Lubricating layer; the polymer powder material includes polyether ether ketone and / or polybutylene adipamide. Experimental results show that the thickness of the composite self-lubricating layer prepared by the invention can reach 0.05-10mm, and the elongation can reach 2-3%.

Description

Technical field [0001] The present invention relates to the field of sliding bearing, and more particularly to a composite self-lubricating layer prepared by extrusion watering method and a preparation method thereof. Background technique [0002] The sliding bearing is a bearings that operate under sliding friction, and the sliding bearing is required for high speed, overload, high precision, and structural needle. Since the 1970s, the sliding bearing created by the three-layer composite materials has been widely used in textile, printing, hydraulic, automobile and other industries. The three-layer composite material is generally made of steel plate, sintered copper powder, high. The three layers of molecular materials are complicated, and have self-lubricating layer tissue. [0003] The sheets used to roll the sliding bearing are usually produced with a wet process, such as the Chinese invention patent CN102977975B, typical conventional wet method preparation process steps are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/025B29C48/154B29C48/885B29C48/92B29C48/79
Inventor 周引春沈持正薛良安
Owner ZHEJIANG SF OILLESS BEARING
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