Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing self-lubricating composite membrane layer on surface of titanium alloy drill rod through two-step method

A technology of composite film layer and titanium alloy, which is applied to the device for coating liquid on the surface, pretreatment surface, coating and other directions, can solve the problem of poor wear resistance of titanium alloy drill pipe, poor bonding force of copper plating layer, and hardness of film layer. problems such as low friction, to achieve the effect of low friction coefficient, time saving and simple process conditions

Inactive Publication Date: 2018-08-17
SOUTHWEST PETROLEUM UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, titanium alloy drill pipes are mainly treated with copper plating, but the copper plating process is very polluting to the environment. At the same time, the bonding force of the copper plating layer is poor, which is more effective in improving the anti-sticking effect of the drill pipes, but the wear resistance of titanium alloy dril

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Specific implementation manner two:

[0015] The two-step method for preparing a self-lubricating composite film on the surface of a titanium alloy drill pipe includes the following steps: (1) Pretreatment of the sample surface, using sandpaper to polish the surface of the titanium alloy drill pipe sample, and then using an acetone solution in ultrasonic waves In the washer, the sample was cleaned and degreasing for 15 minutes, rinsed with deionized water, and dried with a hair dryer. (2) Prepare electrolyte, the total volume of electrolyte is 3L, the solvent is deionized water, the content of solute is: Na 2 SiO 3 :2g / L; Glycerol: 5g / L; (NaPO 3 ) 6 : 8g / L. And set the micro-arc oxidation process parameters: the current density is 10A / dm 2 , The duty cycle is 60%, the oxidation time is 10min; the frequency is 600Hz. At the same time, control the temperature of the electrolyte at 25°C. Then the titanium alloy drill pipe sample is connected to the anode and immersed in the electr...

Example Embodiment

Specific implementation manner two:

[0016] The two-step method for preparing a self-lubricating composite film on the surface of a titanium alloy drill pipe includes the following steps: (1) Pretreatment of the sample surface, using sandpaper to polish the surface of the titanium alloy drill pipe sample, and then using an acetone solution in ultrasonic waves In the washer, the sample was cleaned and degreasing for 15 minutes, rinsed with deionized water, and dried with a hair dryer. (2) Prepare electrolyte, the total volume of electrolyte is 3L, the solvent is deionized water, the content of solute is: Na 2 SiO 3 :10g / L; Glycerol: 1g / L; (NaPO 3 ) 6 : 1g / L. And set the micro-arc oxidation process parameters: the current density is 2A / dm 2 , The duty cycle is 20%, the oxidation time is 60min; the frequency is 100Hz. At the same time, control the temperature of the electrolyte at 30°C. Then the titanium alloy drill pipe sample is connected to the anode and immersed in the electr...

Example Embodiment

Specific implementation manner three:

[0017] The two-step method for preparing a self-lubricating composite film on the surface of a titanium alloy drill pipe includes the following steps: (1) Pretreatment of the sample surface, using sandpaper to polish the surface of the titanium alloy drill pipe sample, and then using an acetone solution in ultrasonic waves In the washer, the sample was cleaned and degreasing for 15 minutes, rinsed with deionized water, and dried with a hair dryer. (2) Prepare electrolyte, the total volume of electrolyte is 3L, the solvent is deionized water, the content of solute is: Na 2 SiO 3 :5g / L; Glycerol: 5g / L; (NaPO 3 ) 6 : 8g / L. And set the micro-arc oxidation process parameters: the current density is 8A / dm 2 , Duty cycle is 50%, oxidation time is 40min; frequency is 500Hz. At the same time, control the temperature of the electrolyte at 28°C. Then the titanium alloy drill pipe sample is connected to the anode and immersed in the electrolyte, the ...

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

No PUM Login to View More

Abstract

The invention discloses a method for preparing a self-lubricating composite membrane layer on the surface of a titanium alloy drill rod through a two-step method. The method mainly comprises the following steps of S1, pretreating a sample surface; S2, preparing an electrolyte, setting micro-arc oxidation process parameters, and carrying out micro-arc oxidation treatment on the sample; S3, rinsingthe sample thoroughly with water, and drying; S4, preparing a PTFE-graphite composite emulsion, setting the contents of PTFE and graphite, and uniformly mixing and stirring; S5, placing the titanium alloy drill rod sample treated through S3 into the heated PTFE-graphite composite emulsion, and heating for 20 to 50min at the constant temperature of 50 DEG C; S6, curing the titanium alloy drill rodsample treated through S5, rising the temperature to 100 to 200 DEG C, and preserving heat for 20 to 50min; S7, continuously curing the titanium alloy drill rod sample treated through S6, rising the temperature to 200 to 300 DEG C, preserving heat for 10 to 30min, and then gradually cooling to room temperature. According to the method provided by the invention, the composite membrane layer with excellent wear resistance can be formed, and the problem that the titanium alloy drill rod is poor in wear resistance is solved.

Description

Technical field [0001] The invention relates to the field of surface modification of titanium alloy materials, in particular to a two-step method for preparing a self-lubricating composite film layer on the surface of a titanium alloy drill pipe. Background technique [0002] Titanium alloy drill pipes are currently mainly copper-plated, but the copper-plating process has a large environmental pollution, and at the same time, the bonding force of the copper-plated layer is poor, which has a significant effect on improving the anti-sticking of the drill pipe, but the wear resistance of the titanium alloy drill pipe Still relatively poor. Micro-arc oxidation treatment can further improve the wear resistance, corrosion resistance and anti-blocking properties of the titanium alloy drill pipe surface. Although the conventional micro-arc oxidation treatment is better than copper plating, it still has low film hardness and poor wear resistance. And other shortcomings. Summary of the i...

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): C25D11/26B05D1/18B05D3/02
CPCC25D11/26B05D1/18B05D3/0254C25D11/026
Inventor 陈孝文蒋烜张德芬施太和赵鹏飞杨欢宫丽杰佘思越廖丹丹徐若斯蔡利萍
Owner SOUTHWEST PETROLEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com