A simulation test for the selection of coatings and surface treatments for plastics injection moulding machines

Bull, SJ; Davidson, RI; Fisher, Emily; McCabe, A.R.; Jones, A.M.

doi:10.1016/s0257-8972(00)00697-6

Cited by 37 publications

(25 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In order to overcome these problems, some authors have investigated a diversified number of surface treatments and tribological coatings [1][2][3]5,[15][16][17][18][19][20]. In fact, recent developments in coatings technology allow a multifaceted approach to each problem, using mono-or multilayered coatings, single composition or graded layers, conventional or nanostructured films.…”

Section: Introductionmentioning

confidence: 99%

Improving the Wear Resistance of Moulds for the Injection of Glass Fibre–Reinforced Plastics Using PVD Coatings: A Comparative Study

et al. 2017

View full text Add to dashboard Cite

Abstract:It is well known that injection of glass fibre-reinforced plastics (GFRP) causes abrasive wear in moulds' cavities and runners. Physical vapour deposition (PVD) coatings are intensively used to improve the wear resistance of different tools, also being one of the most promising ways to increase the moulds' lifespan, mainly when used with plastics strongly reinforced with glass fibres. This work compares four different thin, hard coatings obtained using the PVD magnetron sputtering process: TiAlN, TiAlSiN, CrN/TiAlCrSiN and CrN/CrCN/DLC. The first two are monolayer coatings while the last ones are nanostructured and consist of multilayer systems. In order to carry out the corresponding tribological characterization, two different approaches were selected: A laboratorial method, using micro-abrasion wear tests based on a ball-cratering configuration, and an industrial mode, analysing the wear resistance of the coated samples when inserted in a plastic injection mould. As expected, the wear phenomena are not equivalent and the results between micro-abrasion and industrial tests are not similar due to the different means used to promote the abrasion. The best wear resistance performance in the laboratorial wear tests was attained by the TiAlN monolayer coating while the best performance in the industrial wear tests was obtained by the CrN/TiAlCrSiN nanostructured multilayer coating.

show abstract

Section: Introductionmentioning

confidence: 99%

Improving the Wear Resistance of Moulds for the Injection of Glass Fibre–Reinforced Plastics Using PVD Coatings: A Comparative Study

et al. 2017

View full text Add to dashboard Cite

show abstract

“…2, 11 Commonly applied surfaceengineering processes, found in many tool applications, are the thermo-chemical treatments, ranging from basic surface hardening and plasma nitriding to more recent processes of deep cryogenic treatment and laser-surface remelting. [12][13][14][15][16] However, in the past two decades, surface coating processes are gaining an advantage, including PVD, CVD and PACVD techniques. Thin, hard coatings with excellent tribological properties, like TiN, TiAlN, CrN, etc., have already outperformed and successfully replaced traditional high-speed steel tools in the majority of cutting operations.…”

Section: Introductionmentioning

confidence: 99%

Wear mechanisms and surface engineering of forming tools

Podgornik¹,

Leskovšek²

2015

Mater. Tehnol.

View full text Add to dashboard Cite

The manufacturing of parts is faced with ever-increasing demands for higher strength (hardness) and toughness of the work material, as well as higher productivity and environmental concerns. At the same time, the quality requirements are high and will continue to grow in the future. This leads to restrictions in terms of the type and use of lubricants and especially to increased requirements relating to the wear and fatigue resistance of tools. The main focus on improving the wear resistance and tribological properties of forming tools has mainly been on developing tool steels with an improved fracture toughness and then modifying the lubricants for better retention and permeability at the tool/work-piece contact area. Nevertheless, the wear resistance of forming tools can also be successfully improved by surface-engineering techniques. In recent years, hard coatings in particular have shown enormous potential for improving the tribological properties of contact surfaces. This paper reviews the wear mechanisms encountered in forming processes, as well as various surface-engineering techniques designed to improve the wear resistance and the anti-sticking properties of forming tools. The possible benefits and restrictions of different surface-engineering techniques are presented for the example of sheet-metal forming, fine blanking and forging. Keywords: surface engineering, forming, hard coatings, topography, friction, wear Preoblikovalna industrija se spopada z nenehno nara{~ajo~imi zahtevami po vi{ji trdnosti (trdoti) in`ilavosti preoblikovanih materialov, kakor tudi ve~ji produktivnosti in skrbi za okolje. Isto~asno se pove~ujejo zahteve po kvaliteti izdelkov, kjer predvsem kvaliteta povr{ine postaja vedno bolj pomembna. To pomeni omejitve pri uporabi maziv ter seveda ve~je zahteve po obrabni odpornosti in vzdr`ljivosti preoblikovalnih orodij. Do nedavnega je izbolj{evanje obrabne obstojnosti in tribolo{kih lastnosti preoblikovalnih orodij temeljilo predvsem na razvoju bolj`ilavih in~istej{ih orodnih jekel ter modifikaciji maziv z bolj{imi mazalnimi lastnostmi. V zadnjih letih pa tudi na podro~ju preoblikovalnih orodij tehnike in`eniringa povr{in, {e posebej nanos trdih za{~itnih prevlek, omogo~ajo nadaljnje izbolj{anje tribolo{kih lastnosti kontaktnih povr{in. V prispevku so tako predstavljeni obrabni mehanizmi, ki so jim izpostavljena preoblikovalna orodja, kakor tudi razli~ne tehnike in`eniringa povr{ine, namenjene izbolj{anju obrabne obstojnosti in tornih lastnosti preoblikovalnih orodij. Problemi in prednosti uporabe in`eniringa povr{ine so poudarjene na primeru hladnega preoblikovanja plo~evine, {tancanja in kovanja.

show abstract

“…Glass fibres contact with the cavities surface during both filling and ejection leads to scratches, making them rough enough to deteriorate the appearance of the moulded parts. To solve this problem, which causes additional costs for mould reconditioning and reduced productivity, various coatings and surface treatments have been proposed, such as chromium plating, high velocity oxyfuel (HVOF) WC/Co [2] and the deposition of metallic coatings, like hard chromium or nickel-phosphorus [3]. Also physical vapour deposition (PVD) and chemical vapour deposition (CVD) have been used to produce layers of titanium, aluminium and other carbide or nitride with the same purpose [4].…”

Section: Introductionmentioning

confidence: 99%

Investigation and characterization of Stellite-based wear-resistant coatings applied to steel moulds by cold-spray

et al. 2015

View full text Add to dashboard Cite

A simulation test for the selection of coatings and surface treatments for plastics injection moulding machines

Cited by 37 publications

References 6 publications

Improving the Wear Resistance of Moulds for the Injection of Glass Fibre–Reinforced Plastics Using PVD Coatings: A Comparative Study

Improving the Wear Resistance of Moulds for the Injection of Glass Fibre–Reinforced Plastics Using PVD Coatings: A Comparative Study

Wear mechanisms and surface engineering of forming tools

Investigation and characterization of Stellite-based wear-resistant coatings applied to steel moulds by cold-spray

Contact Info

Product

Resources

About