Nano graphite composite lubricant for cold extrusion, and preparation method and application thereof

A composite lubricant, graphite lubricant technology, applied in the directions of lubricating compositions, additives, petroleum industry, etc., can solve the problem that the lubricant cannot meet the production requirements, achieve excellent diffusion and protective colloid, improve surface quality, and be difficult to decompose. Effect

Active Publication Date: 2015-09-30
SHANGHAI UNIV OF ENG SCI
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional graphite lubricants can meet the requirements of general cold extrusion production, with the continuous development of indus

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
  • Nano graphite composite lubricant for cold extrusion, and preparation method and application thereof
  • Nano graphite composite lubricant for cold extrusion, and preparation method and application thereof
  • Nano graphite composite lubricant for cold extrusion, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] 0.6%% (by weight) of nano-graphite is added to the graphite lubricant for common cold extrusion, wherein the purity of the nano-graphite particles is more than 99%, the particle size is 40nm, and the following preparation scheme is adopted:

[0027] (1) Take nano graphite particles and add them to common graphite lubricant.

[0028] (2) Add a chemical dispersant to the lubricant, the composition of which is 2.6% (by weight) of sodium dioctyl sulfosuccinate and 1.5% (by weight) of sodium methylene bis-tetrasulfonate.

[0029] (3) Electromagnetic stirring of the lubricant for 25 minutes, then ultrasonic dispersion for 20 minutes, and continuous ultrasonic for 3 times to obtain a nano-graphite composite lubricant for cold extrusion.

[0030] Such manufacturing techniques and processes are easy to implement for those in the industry, and those skilled in the art can implement the present invention as described above.

[0031] The lubricant prepared in the above prop...

Example Embodiment

[0032] Example 2

[0033] Nano graphite composite lubricant with the following formula

[0034] Nano graphite: 0.6%, graphite powder: 20%, molybdenum disulfide: 26%, tackifier: 0.4%, dispersant: 3%, magnesium oxide: 10%, water: the balance.

[0035] Then use the following method to prepare:

[0036] (1) Take nano graphite particles and add them to common graphite lubricant.

[0037] (2) Add a chemical dispersant to the lubricant, the composition of which is 1.6% (by weight) of sodium dioctyl sulfosuccinate and 1.4% (by weight) of sodium methylene bis-naphthyl sulfonate.

[0038] (3) Electromagnetic stirring of the lubricant for 25 minutes, then ultrasonic dispersion for 20 minutes, and continuous ultrasonic for 3 times to obtain a nano-graphite composite lubricant for cold extrusion.

[0039] The lubricant prepared in the above proportion was coated on 5 actual extrusions of flange jackets for testing, and the average forming load value obtained during the cold extrusion forming process w...

Example Embodiment

[0040] Example 3

[0041] Nano graphite composite lubricant with the following formula

[0042] Nano graphite: 1%, ordinary graphite: 25%, molybdenum disulfide: 35%, tackifier: 0.5%, dispersant: 4.5%, magnesium oxide: 10%, water: the balance.

[0043] Then use the following method to prepare:

[0044] (1) Take nano graphite particles and add them to common graphite lubricant.

[0045] (2) A chemical dispersant is added to the lubricant, the composition of which is 2.6% (by weight) of sodium dioctyl sulfosuccinate and 1.7% (by weight) of sodium methylene ditetrahydrosulfonate.

[0046] (3) Electromagnetic stirring of the lubricant for 25 minutes, then ultrasonic dispersion for 20 minutes, and continuous ultrasonic for 3 times to obtain a nano-graphite composite lubricant for cold extrusion.

[0047] The lubricant prepared in the above ratio is coated on a circular ring with a material of 20 steel and a 4:2:1 ratio of outer diameter, inner diameter, and height. The ring sample is upset thre...

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
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a nano graphite composite lubricant for cold extrusion, and a preparation method and application thereof. 0.6-1.5 wt% of nano graphite and 3-9 wt% of chemical dispersant are added into a common graphite lubricant for cold extrusion to obtain the nano graphite composite lubricant for cold extrusion. Compared with the prior art, due to the addition of the nano graphite particle, the lubricating property of the lubricant is further enhanced as compared with the traditional cold extrusion lubricant, and the lubricant has the advantages of high temperature resistance, stable chemical properties, low tendency to decomposition and no toxicity or odor. Due to the special properties of the graphite granules, the friction factor in the extrusion forming process is further lowered, and the surface quality of the formed part is further enhanced, thereby satisfying the production of parts with higher requirements for dimensional accuracy and surface quality.

Description

technical field [0001] The invention relates to the technical field of cold extrusion, in particular to a nano-graphite composite lubricant for cold extrusion and a preparation method and application thereof. Background technique [0002] During the extrusion process, due to the large amount of single deformation of the part, the unit positive pressure on the contact surface between the metal and the mold is extremely high, which is equivalent to 3 to 10 times the deformation resistance of the metal, or even higher. Under this condition, the surface of the deformed metal undergoes a drastic renewal, and a large number of new surfaces appear, which makes the phenomenon of metal bonding tools and molds serious. The energy lost due to friction accounts for 50%-70% of the world's primary energy, and wear is one of the main forms of material waste. In order to reduce or eliminate the occurrence of this phenomenon, lubricants are generally used during extrusion. The role of the ...

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
IPC IPC(8): C10M161/00B21C23/32C10N40/24C10N30/04C10N30/06
Inventor 龚红英仇丹丹马婷婷黄继龙宋春雨邹琼琼
Owner SHANGHAI UNIV OF ENG SCI
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