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Huimin Liu
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Huimin Liu, Sriram Sadagopan
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Book Chapter
Prediction and Direct Measurements of Die Wear in Stamping Processes
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009000
EISBN: 978-1-62708-186-3
... Abstract This article describes the laboratory techniques for direct measurement and quantification of die wear in verifying a proprietary die-wear predictor methodology. This method is based on a theoretical formula that can be used to predict the rate of die wear and the life of a die surface...
Abstract
This article describes the laboratory techniques for direct measurement and quantification of die wear in verifying a proprietary die-wear predictor methodology. This method is based on a theoretical formula that can be used to predict the rate of die wear and the life of a die surface coating, applicable to both mild steel and high-strength steels stampings. The article discusses the behavior of the surface conditions through quantitative measurements and surface analyses conducted throughout the wear tests. The surface conditions include surface roughness, surface morphology, microstructure, interfacial friction, surface temperatures, and wear rate.
Book Chapter
Indirect Nondestructive Measurements of Die Wear in Stamping Productions
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009001
EISBN: 978-1-62708-186-3
... Abstract The measurement techniques for die wear can be classified into the following two categories: direct measurements, which are done using lab techniques; and indirect nondestructive measurements, which are done by plant monitoring. This article describes the details of the plant...
Abstract
The measurement techniques for die wear can be classified into the following two categories: direct measurements, which are done using lab techniques; and indirect nondestructive measurements, which are done by plant monitoring. This article describes the details of the plant monitoring techniques, along with comprehensive discussions on the measured wear data based on roughness and hardness of die surfaces. It presents a comparison between the predicted and measured die wear rates.
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003976
EISBN: 978-1-62708-185-6
... Abstract This article describes die wear and failure mechanisms, including thermal fatigue, abrasive wear, and plastic deformation. It summarizes the important attributes required for dies and the properties of the various die materials that make them suitable for particular applications...
Abstract
This article describes die wear and failure mechanisms, including thermal fatigue, abrasive wear, and plastic deformation. It summarizes the important attributes required for dies and the properties of the various die materials that make them suitable for particular applications. Recommendations on the selection of the materials for hot forging, hot extrusion, cold heading, and cold extrusion are presented. The article discusses the methods of characterizing abrasive wear and factors affecting abrasive wear. It discusses various die coatings and surface treatments used to extend the lives of dies: alloying surface treatments, micropeening, and electroplating.
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Effect of lubrication on forging die wear. Wear index is defined as the ave...
Available to PurchasePublished: 01 January 2005
Fig. 22 Effect of lubrication on forging die wear. Wear index is defined as the average cross-sectional area of wear depressions in the die. Source: Ref 22
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Schematic showing extent of die wear in a die block hardened to 42 HRC. The...
Available to PurchasePublished: 01 January 1990
Fig. 22 Schematic showing extent of die wear in a die block hardened to 42 HRC. The block was evaluated for die wear after producing 30,000 forgings of 4140 steel at a rate of 10 blows/workpiece with an 11 kN (2500 lbf) hammer.
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Data on die wear and die life. The three plots in the bottom row relate to ...
Available to PurchasePublished: 01 January 2006
Fig. 2 Data on die wear and die life. The three plots in the bottom row relate to small instrument parts having a maximum area of 19 cm 2 (3 in. 2 ). Source: Ref 1
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Image
Schematic showing extent of die wear in a die block hardened to 42 HRC. The...
Available to PurchasePublished: 01 January 2005
Fig. 26 Schematic showing extent of die wear in a die block hardened to 42 HRC. The block was evaluated for die wear after producing 30,000 forgings of 4140 steel at a rate of 10 blows/workpiece with an 11 kN (2500 lbf) hammer.
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Image
Extent of die wear in a die block hardened to 42 HRC. The block was evaluat...
Available to PurchasePublished: 01 December 1998
Fig. 11 Extent of die wear in a die block hardened to 42 HRC. The block was evaluated for die wear after producing 30,000 forgings of 4140 steel at a rate of 10 blows/workpiece with an 11 kN (2500 lbf) hammer.
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Image
Published: 31 December 2017
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Temperature of melt (Al-10Si-0.8Fe) affects die wear. Corrosion of H13 quen...
Available to PurchasePublished: 01 December 2008
Fig. 9 Temperature of melt (Al-10Si-0.8Fe) affects die wear. Corrosion of H13 quenched and tempered (47 HRC) die steel after 4 h exposure in melt. Source: Ref 13
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in Prediction and Direct Measurements of Die Wear in Stamping Processes[1]
> Metalworking: Sheet Forming
Published: 01 January 2006
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in Prediction and Direct Measurements of Die Wear in Stamping Processes[1]
> Metalworking: Sheet Forming
Published: 01 January 2006
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Published: 01 January 2005
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The effect of lubrication on die wear as a function of number of medium car...
Available to PurchasePublished: 31 December 2017
Fig. 9 The effect of lubrication on die wear as a function of number of medium carbon steel hot billet upset forgings on H13 steel dies with a hardness of 46–48 HRC, showing the effect of sliding on wear. Also of interest here is the relative die wear on the top and bottom die in lubricated
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Influence of initial die hardness on wear of die steels. The wear index is ...
Available to PurchasePublished: 01 January 2005
Fig. 16 Influence of initial die hardness on wear of die steels. The wear index is defined as average cross-sectional area of wear depressions in dies. No. 5 die steel: 0.6 C, 0.3 Si, 0.6 Mn, 1.5 Ni, 0.6 Cr, 0.25 Mo; 5% Cr steel: 0.33 C, 0.3 Si, 1.0 Mn, 5.0 Cr, 1.5 Mo, 1.5 W, 0.5 V; 12% Cr
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Die failure caused by severe wear. (a) Die made from air-hardening tool ste...
Available to PurchasePublished: 01 January 2002
Fig. 43 Die failure caused by severe wear. (a) Die made from air-hardening tool steel that exhibited a crazed and eroded condition. Areas A and B are shown in (b) and (c), respectively. Both 10×. (d) Microstructural examination of area B revealing a layer of as-quenched martensite
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Die failure caused by severe wear. (a) Die made from air-hardening tool ste...
Available to PurchasePublished: 30 August 2021
Fig. 43 Die failure caused by severe wear. (a) Die made from air-hardening tool steel that exhibited a crazed and eroded condition. Areas A and B are shown in (b) and (c), respectively. Original magnification of both: 10×. (d) Microstructural examination of area B revealing a layer
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Published: 01 January 2006
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Dependence of flank wear on punch-to-die clearance in cutting of steel blan...
Available to PurchasePublished: 01 January 2006
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Results of tests on the effects of alloying on wear of forging die steels. ...
Available to PurchasePublished: 01 January 2005
Fig. 14 Results of tests on the effects of alloying on wear of forging die steels. See Table 6(a) and 6(b) for compositions and heat treatments of steels. Source: Ref 25
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