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Drawing lubricant for titanium and titanium alloy tubes and application method of such drawing lubricant

A technology for drawing lubricants and titanium alloys, applied in lubricating compositions, petroleum industry, etc., can solve problems such as poor adhesion and deterioration of lubrication conditions, and achieve the effects of low cost, reduced friction, and high production efficiency

Active Publication Date: 2017-06-09
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Pipe drawing usually uses oily liquid lubricating medium, but for drawing titanium and titanium alloy pipes, the lubricating film formed by ordinary oily liquid lubrication has poor adhesion to the titanium pipe. Most of the lubricating medium has been squeezed out before the sizing belt, resulting in deterioration of lubricating conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A TA16 titanium alloy cold-rolled tube blank with an outer diameter of 20mm and a wall thickness of 1.8mm is selected, and it is to be processed into a square tube of 14.5×14.5mm through two passes of cold drawing; the specific lubrication treatment of the blank is as follows:

[0024] 1. Billet pretreatment: the TA16 alloy tube blank is degreased with acetone, pickled to remove scale and washed with water, and dried for use;

[0025] 2. Using an air furnace, the above-mentioned tube blank is oxidized and annealed at 750°C for 60 minutes to form a dense oxide film on the surface of the tube;

[0026] 3. Lubrication treatment: Spray evenly the lubricant prepared by weight percentage of 20% boron nitride, 40% graphite fluoride, 10% borax, 20% sodium phosphate, and 10% water on the pretreated TA16 alloy pipe The billet surface, then dry the tube billet in an oven at 80°C, and then repeat the above spraying, heating and drying process twice, forming a lubricating film of ap...

Embodiment 2

[0029] A TA1 cold-rolled titanium pipe with an outer diameter of 15mm and a wall thickness of 1.5mm is selected, and it is intended to be processed into a pipe with an outer diameter of 12mm after 3 passes of cold drawing. The specific lubrication treatment of the billet is as follows:

[0030] 1. Blank pretreatment: TA1 tube blank is degreased with acetone, pickled to remove scale and washed with water, and dried for use.

[0031] 2. Use an air furnace to oxidize and anneal the above-mentioned pretreated tube blank at 600°C for 45 minutes to form a dense oxide film on the surface of the tube.

[0032] 3. Lubrication treatment: Spray evenly the lubricant prepared by weight percentage of 7.5% glass powder, 60% boron nitride, 12.5% ​​sodium fluoride, 10% sodium phosphate and 10% water on the surface of the tube blank, and then The tube blank is dried in an oven at 120°C, and then the above-mentioned spraying, heating and drying process is repeated once again, and a lubricating ...

Embodiment 3

[0035] A TA21 alloy tube blank with a diameter of 25mm and a wall thickness of 2mm is selected, and it is intended to be processed into an elliptical cross-section pipe with a long and short axis of 30mm and 16mm respectively through 4 passes of cold drawing. The specific lubrication treatment of the billet is as follows:

[0036] 1. Billet pretreatment: TA21 tube blank is degreased with acetone, pickled to remove scale and washed with water, and dried for use.

[0037] 2. Use an air furnace to oxidize and anneal the above-mentioned pretreated tube blank at 700°C for 90 minutes to form a dense oxide film on the surface of the tube.

[0038] 3. Lubrication treatment: Spray evenly the lubricant of 5% glass powder, 58% fluorinated graphite, 10% borax, 17% sodium fluoride, and 10% water on the surface of the tube blank, and then The tube blank is dried in an oven at 100°C, and then the above-mentioned spraying, heating and drying process is repeated twice, and a lubricating film ...

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Abstract

The invention belongs to the field of lubricating materials and application thereof and discloses a drawing lubricant for titanium and titanium alloy tubes and an application method of such drawing lubricant. The drawing lubricant comprises 1) any two of glass powder, graphite fluoride and boron nitride, 2) any two of borax, sodium phosphate and sodium fluoride, and 3) water. A lubricating treatment process includes subjecting the titanium and titanium alloy tubes to surface cleaning, conducting oxidizing annealing, spraying, drying and drawing practically to enable the surface roughness of drawn products to be below Ra 0.8 micrometers. The drawing lubricant has the advantages that a lubricating coating is formed on the surfaces of titanium and titanium alloy blanks through the drawing lubricant, so that lubricating conditions between the tube blanks and drawing dies are improved effectively, adhesion between the blanks and the dies is prevented, the service lives of the dies are prolonged and the tube surface quality is improved.

Description

technical field [0001] The invention belongs to the field of lubricating materials and applications thereof, in particular to a drawing lubricant for titanium and titanium alloy pipes and a use method thereof. Specifically relates to a lubricant for forming a lubricating coating on the surface of titanium and titanium alloy tube blanks, and the lubricating coating is suitable for the cold drawing process of titanium and titanium alloy tubes. Background technique [0002] Titanium and titanium alloy pipes have the characteristics of high strength, low density, excellent corrosion resistance, and good biocompatibility, and are widely used in aviation, aerospace, shipping, petroleum, chemical, medical and other fields. [0003] Titanium and titanium alloy pipes are usually formed by two-roll or three-roll pipe mills, but the equipment required is relatively complex and the production efficiency is relatively low, especially for small-sized pipes, and the pipe mill is difficult ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04B21C9/02C10N30/06C10N30/08C10N40/24
CPCB21C9/02C10M169/04C10M2201/00C10M2201/042C10M2201/081C10M2201/085C10M2201/087C10M2201/102C10N2030/04C10N2030/06C10N2030/08C10N2030/56C10N2040/24C10N2040/244
Inventor 闫晓东李慧
Owner GRIMAT ENG INST CO LTD
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