Cryo-Treated Blanking Punch Life Improvement Analysis

2020 ◽  
Vol 10 (5) ◽  
pp. 131-136
Author(s):  
Dr. M. M. Dhobe
Keyword(s):  
Wear Resistance ◽  
Tool Steel ◽  
Laboratory Tests ◽  
Wear Behavior ◽  
Cryogenic Treatment ◽  
Sustainable Use ◽  
Secondary Process ◽  
Aisi D2 Steel ◽  
Aisi D2 ◽  
D2 Steel

Cryogenic treatment is a secondary process to traditional heat treatment used for improving the hardness and wear resistance of tool steels. Though the potential use of cryogenic treatment on AISI D2 tool steel under laboratory conditions has been well established by the researchers, it is essential to do the analysis to ensure its sustainable use for industrial application. Therefore, impact of cryogenic treatment on AISI D2 steel blanking punch was evaluated in terms of increase in production rate and its life. The cryogenically treated D2 tool steel punches were used and subjected to manufacture the control levers using blanking operations.  The improved wear resistance of cryogenically treated punch resulted in increase in production and punch life more than 200%. Punch life was studied and correlated to increase in production & wear behavior of blanking punch. The AISI D2 steel samples were prepared and subjected to laboratory tests comprising of metallographic observations and hardness. It was found that laboratory tests were not enough to predict improvements in mechanical properties. The mechanism responsible for augmented wear resistance by cryogenic treatment was the conversion of retained austenite to martensite and precipitation of new secondary carbides.

Evaluation of Deep Criogenic Treatment at Microabrasive Wear of Aisi D2 Steel

2015 ◽  
Vol 1120-1121 ◽  
pp. 1257-1263
Author(s):  
Cosme Roberto Moreira Silva ◽  
Tiago F.O. Melo ◽  
José A. Araújo ◽  
J.L.A. Ferreira ◽  
S.J. Gobbi
Keyword(s):  
Wear Resistance ◽  
Treatment Cycle ◽  
Cryogenic Treatment ◽  
Deep Cryogenic Treatment ◽  
Abrasive Resistance ◽  
Austenitization Temperature ◽  
Aisi D2 Steel ◽  
X Ray ◽  
Aisi D2 ◽  
D2 Steel

Wear resistance of tool steels can be increased with deep cryogenic treatment (DCT) application. Mechanisms related to DCT are still not completely understood. Microabrasive wear resistance of cryogenically treated samples of AISI D2 steel was evaluated in terms of austenitization temperature at heat treatment cycle and quenching steps related to DCT. X-ray difractometry, scanning and optical microscopy and quantitative evaluation of carbides with image analysis were carried out aiming material characterization. For samples subjected to higher austenitization temperatures, the DCT treatment does not increase abrasive wear resistance. For samples treated at lower austenitization temperature, the DCT treatment results on 44% increase at abrasive resistance. This effect is correlated to the increase of the amount of fine carbides distributed at samples matrices cryogenically treated.

Structure-Property Correlation of Cryotreated AISI D2 Steel

2010 ◽  
Vol 117 ◽  
pp. 49-54 ◽  
Author(s):  
Debdulal Das ◽  
Apurba Kishore Dutta ◽  
Kalyan Kumar Ray
Keyword(s):  
Wear Resistance ◽  
Cryogenic Treatment ◽  
Structure Property ◽  
Tool Steels ◽  
Deep Cryogenic Treatment ◽  
Aisi D2 Steel ◽  
Secondary Carbides ◽  
Varied Degree ◽  
Aisi D2 ◽  
D2 Steel

This study aims to reveal the underlying mechanism associated with the enhancement of wear resistance of tool steels by deep cryogenic treatment and to resolve the issue of reported varied degree of improvement in wear resistance through structure-property correlation of cryotreated vis-à-vis conventionally treated AISI D2 steel. Microstructures of heat treated specimens have been characterized employing various techniques with specific emphasis on quantitative estimation of the characteristics of secondary carbides. Evaluations of properties include measurements of bulk hardness, apparent strength of the matrix, fracture toughness and dry sliding wear resistance under wide rage of normal loads supplemented by in-depth characterizations of worn surfaces, wear debris and subsurfaces of worn specimens in order to identify the operative mode and mechanism of wear. It has been demonstrated that the favorable modifications of the precipitation behavior of secondary carbides in addition to removal of retained austenite are the governing mechanisms for the enhancement of wear resistance of tool steels by deep cryogenic treatment. The cause of the reported varied degree of improvement in wear resistance by deep cryogenic treatment has been explained by disparity of the operative modes and mechanisms of wear.

Effect of Multilayer Nanocomposite TiAlSiN/TiSiN/TiAlN Coating on Wear Behavior of Carbide Tools in the Milling of Hardened AISI D2 Steel

2016 ◽  
Vol 38 ◽  
pp. 9-17 ◽  
Author(s):  
Halil Caliskan ◽  
Celil Cagatay Celil ◽  
Peter Panjan
Keyword(s):  
Wear Resistance ◽  
Wear Mechanisms ◽  
Wear Behavior ◽  
Cutting Tools ◽  
Hard Coatings ◽  
Aisi D2 Steel ◽  
Tialn Coating ◽  
Multilayer Design ◽  
Aisi D2 ◽  
D2 Steel

Thin hard coatings are widely used in the protection of cutting tools, dies and molds to prolong their wear resistance and lifetime. Superior properties of different coatings can be combined with multilayer design, and especially a higher microhardness can be obtained by nanocomposite structures. In this study, a multilayer design composing of TiAlSiN, TiSiN and TiAlN layers was applied on carbide cutting tools. The top TiAlSiN layer has a nanocomposite structure of crystalline fcc-TiAlN and amorphous Si3N4 phases. The multilayer nanocomposite TiAlSiN/TiSiN/TiAlN coating was deposited on the carbide cutting tool using an industrial magnetron sputtering system. Wear behavior of the coated tools was investigated in the milling of hardened AISI D2 steel (~55 HRc). The changes in tool wear and surface roughness as a function of cutting distance were recorded. Wear mechanisms and types were investigated using optical and scanning electron microscopy in combination with energy dispersive spectroscopy. It was found that the multilayer nanocomposite TiAlSiN/TiSiN/TiAlN coating provides at least 1.2 times higher wear resistance and a longer lifetime than single layer TiN and TiAlN coatings. Main wear mechanisms are abrasion and adhesion of the workpiece material on the cutting edge. As a result, wear types are notch wear and build-up-edge formation.

scholarly journals Growth kinetics and wear resistance of vanadium carbide on AISI D2 steel produced by TRD process

2021 ◽  
Vol 8 (3) ◽  
pp. 036501
Author(s):  
Lianpu Zhou ◽  
Chundong Zhu ◽  
Lian Guo ◽  
Zihao Wei
Keyword(s):  
Wear Resistance ◽  
Growth Kinetics ◽  
Vanadium Carbide ◽  
Aisi D2 Steel ◽  
Aisi D2 ◽  
D2 Steel

Wear Behavior of Borided AISI D2 Steel under Linear Reciprocating Sliding Conditions

2019 ◽  
Vol 55 (2) ◽  
pp. 341-351 ◽  
Author(s):  
A. Yapici ◽  
S. E. Aydin ◽  
V. Koc ◽  
E. Kanca ◽  
M. Yildiz
Keyword(s):  
Wear Behavior ◽  
Aisi D2 Steel ◽  
Reciprocating Sliding ◽  
Aisi D2 ◽  
D2 Steel

scholarly journals Influence of Cryogenic Treatment on Wear Resistance and Microstructure of AISI A8 Tool Steel

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1038 ◽  
Author(s):  
Pello Jimbert ◽  
Maider Iturrondobeitia ◽  
Julen Ibarretxe ◽  
Roberto Fernandez-Martinez
Keyword(s):  
Wear Resistance ◽  
Tool Steel ◽  
Scientific Literature ◽  
Wear Behavior ◽  
Cryogenic Treatment ◽  
Cold Work ◽  
Secondary Carbide ◽  
Tool Steels ◽  
Deep Cryogenic Treatment ◽  
Cold Work Tool Steel

The effects of deep cryogenic treatment (DCT) on the wear behavior of different tool steels have been widely reported in the scientific literature with uneven results. Some tool steels show a significant improvement in their wear resistance when they have been cryogenically treated while others exhibit no relevant amelioration or even a reduction in their wear resistance. In this study, the influence of DCT was investigated for a grade that has been barely studied in the scientific literature, the AISI A8 air-hardening medium-alloy cold work tool steel. Several aspects were analyzed in the present work: the wear resistance of the alloy, the internal residual stress, and finally the secondary carbide precipitation in terms of lengths and occupied area and its distribution into the microstructure. The results revealed a reduction in the wear rate of about 14% when the AISI A8 was cryogenically treated before tempering. The number of carbides that precipitated into the microstructure was 6% higher for the cryogenically treated samples, increasing from 0.68% to 0.73% of the total area they covered. Furthermore, the distribution of the carbides into the microstructure was more homogenous for the cryogenically treated samples.

Sub-zero treatments of AISI D2 steel: Part II. Wear behavior

2010 ◽  
Vol 527 (9) ◽  
pp. 2194-2206 ◽  
Author(s):  
Debdulal Das ◽  
Apurba Kishore Dutta ◽  
Kalyan Kumar Ray
Keyword(s):  
Wear Behavior ◽  
Steel Part ◽  
Aisi D2 Steel ◽  
Aisi D2 ◽  
D2 Steel

Wear behavior of AISI D2 steel by enhanced ion nitriding with atomic attrition

2015 ◽  
Vol 87 ◽  
pp. 82-90 ◽  
Author(s):  
Kyun Taek Cho ◽  
Young-Kook Lee ◽  
Won Beom Lee
Keyword(s):  
Wear Behavior ◽  
Ion Nitriding ◽  
Aisi D2 Steel ◽  
Aisi D2 ◽  
D2 Steel
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