Influence of different plasma nitriding treatments on the wear and crack behavior of forging tools evaluated by Rockwell indentation and scratch tests

Paschke, H.; Weber, Martin; Kaestner, Peter; Braeuer, G.

doi:10.1016/j.surfcoat.2010.07.053

Cited by 50 publications

(29 citation statements)

References 13 publications

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“…For several years, attempts have been made to their sequential use, in particular to the connection of nitriding and PVD processes or shot peening and nitriding. Nitriding of steel and PVD coating deposition have been the subject of many publications [6][7][8][9] as shot peening and PVD coating deposition [10,11]. To ensure good adhesion of coatings to the substrate nitrided, the formation of so-called "white layer" of iron nitrides ε-Fe 2-3 N i c′-Fe 4 N [12] on the surface should be reduced or completely eliminated.…”

Section: Introductionmentioning

confidence: 99%

The Adhesion of CrN Thin Films Deposited on Modified 42CrMo4 Steel

Łupicka

Warcholiński

2017

Advances in Materials Science and Engineering

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Here, the e ect of adhesion of CrN hard coatings on modi ed 42CrMo4 steel substrate is presented. Modi cations of the substrate are shot peening, nitriding, shot peening, and nitriding joined process. In the shot peening process, two variable process parameters were used: exposure time (t) and air pressure (p). e nitriding process was conducted in the following parameters: nitriding potential N p � 4.86, nitriding time t n � 3 h, and temperature process T � 530°C. Modi ed substrates were characterized by surface hardness HV5 and hardness pro les on the cross section of samples and by surface roughness parameters. On such prepared substrates, the CrN coating was deposited. e adhesion of CrN coating on modi ed substrates was de ned by the scratch test. Chemical and phase composition of the lms was determined using EDS method and X-ray di raction, respectively. e surface hardness of deposited lms was also de ned. e substrate of 42CrMo4 steel without mechanical and heat treatment coated by hard CrN lm was used as a reference.

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Section: Introductionmentioning

confidence: 99%

The Adhesion of CrN Thin Films Deposited on Modified 42CrMo4 Steel

Łupicka

Warcholiński

2017

Advances in Materials Science and Engineering

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“…This offers a hardening of the subsurface while generating near-surface compressive stresses which are able to prevent cracking or thermal loss of hardness if performed within appropriate parameters. Preliminary work [2] has shown the high potential of adjusting the nitriding hardness profile as a mean of surface hardness and hardness gradient into the core of the tool. The role of the compound layer formation is also found in the ongoing discussion and should be considered in wear investigations, especially if a duplex treatment with hard coatings in order to prevent tribologically originated wear is planned [3,4].…”

Section: Introductionmentioning

confidence: 99%

Adapted surface properties of hot forging tools using plasma technology for an effective wear reduction

Paschke

Yilkiran

Lippold

et al. 2015

Wear

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“…An optimal processing temperature is about 500 to 540°C [8]. There are trials using duplex layers in the sequence: nitriding plus PVD or CVD or PACVD [9,10].…”

Section: Typical Repair Methods Applied To Worn Forging Diesmentioning

confidence: 99%

Damage, Lifetime, and Repair of Forging Dies

Buchmayr

2016

Berg Huettenmaenn Monatsh

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Abstract:The life time of forging dies is essential for economic production. The forging conditions and the characteristic tool damage vary from part to part, which makes a life time prediction very difficult. By means of three case studies, it is shown that the knowledge of the dominant damage mechanism is the key to finding out proper counter-measures or repair technologies. Best practice processing and repair technologies are discussed in this paper. Common tool materials are listed and assigned to their proper usage. Plasma-nitriding without white layer is proposed to be a good economic and technical compromise, when compared to other surface technologies. Finally, the potential of automatic tooling for die repair is pointed out.

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Influence of different plasma nitriding treatments on the wear and crack behavior of forging tools evaluated by Rockwell indentation and scratch tests

Cited by 50 publications

References 13 publications

The Adhesion of CrN Thin Films Deposited on Modified 42CrMo4 Steel

The Adhesion of CrN Thin Films Deposited on Modified 42CrMo4 Steel

Adapted surface properties of hot forging tools using plasma technology for an effective wear reduction

Damage, Lifetime, and Repair of Forging Dies

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