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Composite lubricating grease for cold-drawn steel pipe die and application thereof

A cold-drawn steel pipe and lubricating grease technology, applied in the field of compound lubricating grease, can solve problems such as mold temperature rise and lubricating grease failure, and achieve the effects of enhanced adhesion, outstanding performance, and improved quality

Pending Publication Date: 2021-04-13
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat generated by the drawing friction will increase the temperature of the mold, which will easily cause the grease to fail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The compound lubricating grease that this embodiment is used for cold-drawn steel pipe mold is formed by mixing 93% lithium base grease and 7% lubricity enhancer, lubricity enhancer is made of silicon nitride, MoS 2 It is composed of graphite and graphite in a mass ratio of 5:1:3.

[0026] The preparation method of the composite lubricating grease in this example is: take silicon nitride, MoS 2 Mix well with graphite to obtain a lubrication enhancer; preheat the grease to 80-90°C, then add the lubrication enhancer, and stir well to obtain a compound grease.

[0027] After the composite grease of the present embodiment is coated on 45# round steel, under the condition of load 1200N, speed 0.1m / s, carry out end face test in multifunctional friction and wear testing machine, the result is as shown in table 1.

Embodiment 2

[0032] The compound lubricating grease that this embodiment is used for cold-drawn steel pipe mold is formed by mixing 93% lithium base grease and 7% lubricity enhancer, lubricity enhancer is made of silicon nitride, MoS 2 It is composed of graphite and graphite in a mass ratio of 3:1:2.

[0033] The preparation method of the composite lubricating grease in this example is: take silicon nitride, MoS 2 Mix well with graphite to obtain a lubrication enhancer; preheat the grease to 80-90°C, then add the lubrication enhancer, and stir well to obtain a compound grease.

[0034] After the composite grease of the present embodiment is coated on 45# round steel, under the condition of load 1000N, speed 0.1m / s, carry out end face test in multifunctional friction and wear testing machine, the result is as shown in table 1.

Embodiment 3

[0039] The compound lubricating grease that this embodiment is used for cold-drawn steel pipe mold is formed by mixing 93% lithium base grease and 7% lubricity enhancer, lubricity enhancer is made of silicon nitride, MoS 2 It is composed of graphite and graphite in a mass ratio of 1:5:5.

[0040] The preparation method of the composite lubricating grease in this example is: take silicon nitride, MoS 2 Mix well with graphite to obtain a lubrication enhancer; preheat the grease to 80-90°C, then add the lubrication enhancer, and stir well to obtain a compound grease.

[0041] After the composite grease of the present embodiment is coated on 45# round steel, under the condition of load 800N, speed 0.1m / s, carry out end face test in multifunctional friction and wear testing machine, the result is as shown in table 1.

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Abstract

The invention discloses composite lubricating grease for a cold-drawn steel pipe die and application thereof. The composite lubricating grease is formed by mixing lubricating grease and a lubrication enhancer, and the lubrication enhancer is composed of silicon nitride, MoS2 and graphite. The composite lubricating grease disclosed by the invention not only has good antifriction and anti-wear properties, but also can reduce the wear degree of the cold-drawn die, prolong the service life of the die, improve the quality of a cold-drawn steel pipe, greatly improve the smoothness of the inner and outer surfaces of the cold-drawn steel pipe and ensure the original glossiness of the steel pipe.

Description

technical field [0001] The invention relates to the technical field of steel pipe processing, in particular to a composite lubricating grease for cold drawn steel pipe molds. Background technique [0002] Cold drawing is a kind of processing technology for materials. For metal materials, cold drawing refers to drawing under the condition that the material is at normal temperature in order to achieve a certain shape and certain mechanical properties. Cold drawn products have the advantages of high dimensional accuracy and good surface finish compared to thermoforming. Cold-drawn steel pipe is a kind of steel pipe, that is, it is a kind of classification according to different production processes. It is different from hot-rolled (expanded) pipes. become. The main feature of cold-drawn steel pipe is that it has no welded seam and can withstand greater pressure. [0003] During the processing of cold-drawn steel pipes, it is necessary to lubricate the cold-drawing die (compo...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10N50/10C10N40/24C10N30/06C10N30/04C10N30/08C10N30/10C10N30/12
CPCC10M169/06C10M2201/10C10M2201/066C10M2201/041C10M2201/061
Inventor 解挺张俊龙陈堃张龙肖李晨温恒史雅如周剑
Owner HEFEI UNIV OF TECH
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