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Texturing and self-lubricating treatment method for metal plastic forming die

A technology of plastic forming and treatment method, which is applied in the field of self-lubricating treatment of metal plastic forming molds. It can solve the problems of increasing local friction, high-temperature lubrication of air-conditioning compressor rotors and end plates, etc., so as to reduce plastic flow resistance and protect the working environment. and the health of the operator, and the effect of improving the yield and forming speed

Inactive Publication Date: 2011-10-19
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method mainly increases local friction and improves material flow by setting textured protrusions on the surface of the mold, but does not involve the problem of solid lubrication treatment on the mold surface
The Chinese patent published in 2009 (application number: 200710307282.x) proposed a graphite-based bonded solid lubricant, which solved the problem of medium and high temperature lubrication of air-conditioning compressor rotors and end plates
The Chinese patent published in 2010 (application number: 200910272370.X) proposed a process of using carbon dioxide laser to laser quench the surface of the automobile panel mold, which improved the surface hardness and wear resistance of the mold, but did not involve the lubrication of the mold surface The problem of reducing friction

Method used

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  • Texturing and self-lubricating treatment method for metal plastic forming die
  • Texturing and self-lubricating treatment method for metal plastic forming die
  • Texturing and self-lubricating treatment method for metal plastic forming die

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Embodiment Construction

[0048] to combine figure 1 , at the rounded corners of the drawing punch 1 and the flange of the drawing die 5, a series of micro-cavities are formed by laser micromachining, and a solid lubricant 7 is pressed in, so that a solid lubricant is formed on the surface of the mold during the forming process. Self-lubricating film8. By setting the storage chamber 6, it can play the role of collecting abrasive grains and lubricant.

[0049] The present invention is further illustrated below with specific examples.

[0050] 1) Laser surface texturing micromachining process.

[0051] Laser micromachining is carried out on the end face of the sample with a diode-pumped Nd:YAG laser. The laser wavelength is 532nm, the processing current is 15A, the number of pulse repetitions is 4 times, and the cavity spacing is 300mm×300mm. The obtained microcavities and their distribution are as follows Figure 5 As shown, the microcavities are neatly arranged and uniform in size. The cross-secti...

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Abstract

The invention discloses a texturing and self-lubricating treatment method for a metal plastic forming die. In the invention, texturing and micromachining treatment is firstly carried out on a die surface, and then forming, adhering and machining treatment of a self-lubricating composite material is carried out on the die. Because the texturing and self-lubricating treatment is carried out on a metal plastic forming die surface, optimization distribution of lubricating property of the die surface is realized while the die carrying capacity and the molded surface matching precision are ensured,the flowing of the material and the lubricating and abrasive resistance of the die are improved, the die life is prolonged and the product quality is enhanced.

Description

technical field [0001] The invention relates to a lubrication method of a mold, in particular to a self-lubricating treatment method for a metal plastic forming mold. Background technique [0002] In the process of metal pressure processing, the deformed metal produces directional flow relative to the surface of the mold during plastic deformation, thereby generating friction and friction on the interface between the deformed body and the mold, which not only increases the deformation resistance of the metal and causes uneven deformation, but also It will also cause the wear of the mold and greatly reduce the service life of the mold. Wear is a decisive factor affecting die life, for example, during high temperature forming, more than 70% of the die life will fail due to wear. For metal plastic forming dies (such as drawing, extrusion, rolling, precision forging and other dies), research and solve the friction, wear and lubrication problems of the die under the conditions o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 华希俊张培耘杜志华符永宏尹必峰王匀
Owner JIANGSU UNIV
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