New Lubricating Method for Warm Forging of Steel with Boron Oxide (B2O2)

Nonoyama, Fumio; Kitamura, Kazuhiro; Danno, Atsushi; Osakada, Kozo

doi:10.1016/s0007-8506(07)62460-3

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…Nonoyama et al. 31 developed a new lubrication method consisting in using glass as a lubricant with a low melting point in warm forging of steel. Yang et al.…”

Section: Properties and Tests Of Lubricantsmentioning

confidence: 99%

“…30 However, these graphiteless lubricants have insufficient lubrication properties. Nonoyama et al 31 developed a new lubrication method consisting in using glass as a lubricant with a low melting point in warm forging of steel. Yang et al 32 present a thorough research of the dynamics of lubricant deposition into the surface of a hot forging tool, while in Yang and Shivpuri 33 analyze the mechanism of lubricant evaporation and provide some information on lubrication for hot forging processes.…”

Section: Properties and Tests Of Lubricantsmentioning

confidence: 99%

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Lubrication in hot die forging processes

Hawryluk

Ziemba

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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This article presents selected aspects of lubricant application, as well as lubrication methods and devices in the context of forging tool durability and accessories used in die forging processes at elevated temperatures. The properties and applications of the currently used lubricating and cooling agents in selected industrial forging processes were analyzed. The authors’ original studies on the influence of lubricant application, dose size, time and feed direction as well as other factors affecting tribological conditions are also presented. A review of lubricating and cooling systems and devices is provided, as well as a lubricating device built on the basis of the authors’ knowledge and experience is presented. The developed system, implemented into an industrial process, makes it possible to select and maintain its optimal tribological conditions through the control of the size and frequency of the administered lubricant dose. It may be an alternative to the manual lubricant application method, where human error is a factor, or to fully automated, but expensive, lubrication systems.

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“…Nonoyama et al. 31 developed a new lubrication method consisting in using glass as a lubricant with a low melting point in warm forging of steel. Yang et al.…”

Section: Properties and Tests Of Lubricantsmentioning

confidence: 99%

Section: Properties and Tests Of Lubricantsmentioning

confidence: 99%

Lubrication in hot die forging processes

Hawryluk

Ziemba

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Graphite lubricants have been altered into non-graphite lubricants in hot forging [4]. Nonoyama et al [5] developed the lubrication method using glass to apply to backward can extrusion in warm forging of steel. Yang et al [6] closely investigated the dynamics of lubricant deposition on hot die.…”

Section: Introductionmentioning

confidence: 99%

Study on Cylindrical Heatsink Forging Process Considering Friction Condition

Yang

Chen

2019

KEM

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The feasibility of forging of AL-1050 alloy of cylindrical heatsink under warm conditions is demonstrated in the present work. The stress-strain curves and friction factor play an important role in the cylindrical heatsink forging. The purpose of forging lubrication is to reduce friction between blank and die, and to decrease resistance of metal flow to die. The stress-strain curves at different temperatures are obtained by compressing tests. The friction factor between 1050 aluminum alloy and die material are determined at different temperatures by ring compression tests with graphite lubricants. The compressing and ring compressing tests are carried out by using the computerized screw universal testing machine. The finite element method is used to investigate the forming characters of the forging process. To verify the prediction of FEM simulation in the cylindrical heatsink forging process, the experimental parameters such as stress-strain curves and fiction factor, are as the input data during analysis. Maximum forging load and effective stress distribution are determined of the heatsink forging, using the finite element analysis. Finally, the cylindrical heatsink parts are formed by the forging machine under the conditions using finite element analysis.

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“…This is mainly because solid lubricant such as graphite and molybdenum disulfide is widely used in hot forging processes. However, as an alternative oxide glass is used beyond the glass transition temperature as lubricant in warm forging processes of steel [10,11] and hot forging processes of titanium alloy and nickel based superalloys. On the other hand, from the demands of structural components in high-strength material with complicated shape, high forging load is often required in such warm and hot forging processes.…”

Section: Introductionmentioning

confidence: 99%

Lubrication in Hot Forging with Pulsed Ram Motion

Matsumoto

Utsunomiya

Ishigai³

2018

KEM

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The effect of pulsed (oscillating) ram motion control on lubrication was investigated in hot forging of stainless steel workpiece with oxide glass lubricant. During the retreat in the pulsed ram motion, the workpiece was re-lubricated by flow of lubricant through the gap between the workpiece and the die. A hot spike-type forging test on a servo press with pulsed ram motions was carried out to investigate the lubrication performance of the oxide glass. In the test, the workpiece with a temperature of 1223 K was extruded into the hollow part of the upper die together with oxide glass in a manner that combined pulsed and stepwise ram operations. The re-lubrication of the workpiece with oxide glass was confirmed by the test results showing 5–10% reduction in the forging load and 5% longer length of the backward extruded part of the workpiece under an appropriate pulsed ram motion.

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New Lubricating Method for Warm Forging of Steel with Boron Oxide (B2O2)

Cited by 10 publications

References 4 publications

Lubrication in hot die forging processes

Lubrication in hot die forging processes

Study on Cylindrical Heatsink Forging Process Considering Friction Condition

Lubrication in Hot Forging with Pulsed Ram Motion

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