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Manufacturing method of glass lubricating pad for hot extrusion of steel pipe

A technology of glass lubrication and manufacturing method, which is applied in the field of hot extrusion lubrication of steel pipes, can solve problems such as the difficulty of forming glass lubricating pads, achieve the effects of improving lubrication conditions, simplifying the forming process, and improving product quality

Active Publication Date: 2017-11-03
宝武特种冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a method for making a glass lubricating pad for hot extrusion of steel pipes, which can make the glass lubricating pad strengthen in the forming mold during the manufacturing process and have a certain strength, so that the glass lubricating pad is not easy to break during the moving process , and it can also solve the problem that glass lubricating pads with local complex structures are difficult to form

Method used

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  • Manufacturing method of glass lubricating pad for hot extrusion of steel pipe
  • Manufacturing method of glass lubricating pad for hot extrusion of steel pipe
  • Manufacturing method of glass lubricating pad for hot extrusion of steel pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1: the making of solid cylindrical glass lubricating pad

[0039] see figure 1 , figure 2 1 kg of glass powder and 20 g of water glass with a particle size ratio of 38% (20-40 orders), 45% (40-60 orders) and 17% (60-80 orders) were vigorously stirred in a vertical mixer for 5 minutes; Lay air-permeable tissue paper on the bottom of the lower mold 2, and evenly open some air holes 21 on the lower mold 2; pour the mixture of glass powder and water glass into the forming mold formed by the upper and lower molds 1 and 2, and use a scraper Fill the mixture of glass powder and water glass evenly in the forming mold, and scrape the upper surface; cover the gas-filled cover 4 with air tube 3 on the glass lubricating pad, and turn on the CO 2 Air supply valve 5, blow air into the mold for 15 seconds; remove the inflatable cover 4; jack up the lower mold 2, and take out the glass lubricating pad 100; it can be used for profile extrusion after subsequent drying. Wit...

example 2

[0040] Example 2: Production of special-shaped glass lubricating pads

[0041] 1 kg of glass powder with a particle size ratio of 38% (20-40 mesh), 45% (40-60 mesh) and 17% (60-80 mesh) and 20 g of water glass were vigorously stirred in a vertical mixer for 5 minutes. Glass lubricating pad forming mold such as image 3 , 4 shown. Pour the mixture of glass powder and water glass into the mold, use a scraper to evenly fill the mixture of glass powder and water glass in the forming mold, and scrape the upper surface. Put the upper mold 1' flat into the forming mold, press the upper mold 1' into the mold with a press or manually, so that the glass lubricating pad 100 is formed. Take out the upper mold 1', cover the inflatable cover with air tube on the glass lubricating pad, turn on the CO 2 Air supply valve, blow air into the forming mold for 15 seconds. Remove the inflatable cover. The lower mold 2' is jacked up, and the glass lubricating pad is taken out. It can be used ...

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Abstract

A method for making a glass lubricating pad for hot extrusion of steel pipes, comprising the following steps: 1) The particle size of glass powder is: 20-40 mesh, 30-50%; 40-60 mesh, 30-50%; 60-80 mesh, 10-30%; 2) Water glass is used as the binder for glass powder molding, and the weight ratio of glass powder to water glass is 100:1-3; 3) The mixture of glass powder and water glass is put into a molding mold for molding , no pressure is used during molding or a molding pressure of no more than 100kPa is used; 4) CO2 is filled into the cavity of the molding mold to infiltrate CO2 into the mixture, and the gas flow rate of the mixture of glass powder and water glass per liter is 0.1~5L / min , The inflation time is 10-100 seconds. The method of the invention can strengthen the glass lubricating pad in the forming mold during the production process to have a certain strength, so that the glass lubricating pad is not easily broken during the moving process, and can also solve the problem that the glass lubricating pad with a partially complex structure is difficult to form.

Description

technical field [0001] The invention relates to a steel pipe hot extrusion lubrication technology, in particular to a manufacturing method of a glass lubricating pad for steel pipe hot extrusion. Background technique [0002] Glass lubrication technology is widely used in hot extrusion of steel. The hot extrusion process of steel has high temperature and high speed, and has high requirements for lubricants. In addition to ensuring good lubrication effect, it should also have heat insulation to avoid overheating of tools and dies and significantly reduce service life. Glass lubricants can well meet the special requirements of steel hot extrusion lubrication and protection of tools and dies. When glass lubricants are used, there are usually two ways: [0003] The first is that the powdered glass is directly coated on the high-temperature metal, and the powdered glass is heated and melted by the high temperature on the surface of the blank, and then adhered to the surface of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26B21C23/32C04B14/22C04B22/06
Inventor 范永革陈久锋龚张耀
Owner 宝武特种冶金有限公司
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