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Lubricant formulation for high temperature metal forming processes

a technology of high temperature metal forming and lubricant formulation, which is applied in the direction of metal rolling arrangement, manufacturing tools, shaping tools, etc., can solve the problems of ineffective petrochemical based lubricants, and achieve the effect of improving lubricity and good adhesion to the surfa

Inactive Publication Date: 2008-04-03
GM GLOBAL TECH OPERATIONS LLC
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  • Abstract
  • Description
  • Claims
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Benefits of technology

[0003]This invention is believed to provide advantages and alternatives over prior practices by providing improved lubricant formulations useful in elevated high temperature metal forming processes. The formulations contain boron nitride lubricant with graphite additions. These formulations enhance lubricity while maintaining good adherence to the surface of the blank.

Problems solved by technology

Petrochemical based lubricants are ineffective due to the high temperatures utilized in these processes.

Method used

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  • Lubricant formulation for high temperature metal forming processes
  • Lubricant formulation for high temperature metal forming processes
  • Lubricant formulation for high temperature metal forming processes

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Embodiment Construction

[0012]For ease of reference and understanding, the following description is set forth with respect to a simplified exemplary metal formation process. Importantly, it is to be understood that the lubrication system of the present invention is in no way limited to such a formation process. Rather, it is contemplated and intended that the lubrication system will be broadly applicable to any number of elevated temperature metal formation practices.

[0013]Reference will now be made to the various drawings wherein to the extent possible, like elements are designated by corresponding reference numerals in the various views. FIGS. 1-5 illustrate schematically a simplified exemplary so called “warm forming” practice utilizing male and female formation tool members. In the illustrated practice a female member 12 includes a mold cavity 32, bottom surface 14, and two opposing wall surfaces 16. A metal blank 22 is placed on top of the female member such that a portion of the bottom surface 30 of ...

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Abstract

Improved lubricant system useful in metal forming processes. The lubricant formulations contain boron nitride lubricant with graphite additions. These formulations enhance lubricity while maintaining good adherence at elevated temperatures.

Description

TECHNICAL FIELD[0001]The present invention relates generally to lubricant formulations useful for elevated temperature metal forming processes such as quick plastic forming, superplastic forming, and warm forming processes.BACKGROUND OF THE INVENTION[0002]Development of lubricants for elevated temperature metal forming processes such as quick plastic forming (QPF), superplastic forming (SPF), or warm forming requires the following features: low coefficient of friction, good adhesion to the blank, uniform application pattern, low cost and ease of removal after forming. Petrochemical based lubricants are ineffective due to the high temperatures utilized in these processes. The most commonly used lubricant for processes involving such elevated temperatures is boron nitride (BN). However, other lubricants such as graphite, molybdenum disulfide, and magnesium hydroxide (commonly referred to as milk of magnesia when in aqueous suspension) have been used.SUMMARY OF THE INVENTION[0003]This ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B21D37/18
CPCB21D37/18
Inventor HANNA, MICHAEL D.KRAJEWSKI, PAUL E.SCHROTH, JAMES G.
Owner GM GLOBAL TECH OPERATIONS LLC
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