Investigations were carried out on the resistance to crack propagation of a tool material for hot steel working. Observations on the tool used on a production line showed that cracks propagate alongside the meshy carbides. A hypothesis was then proposed which stated that crack propagation would be suppressed by changing the carbides into granular shapes. The key to realizing this idea was to heat treat the parent material manufactured by casting, which has never been done in this field. Among the trial and original materials, an appropriate one was selected through laboratory experiments and efficiency was verified on the production line.
NoguchiH.TanakaT.KawamotoK.UmemotoS.High-temperature wear properties and actual rolling results of high-chromium work roll for hot strip mill (in Japanese). Tetsu-to-Hagané (J. Iron Steel Inst. Jpn), 1984, 70 (10), 1452–1458.
2.
KatoO.KawanamiT.Propagation process of scoring of rolls during hot strip rolling of stainless steel (in Japanese). J. Jpn Soc. Technol. Plast., 1989, 30 (336), 103–109.
3.
AverinkH. J.Hot rolling lubrication at Stelco's Lake Erie Works hot strip mill. In Proceedings of Conference on Mechanical Working and Steel Processing, 1988, pp. 141–146.
4.
TsuchiyaY.KawauraH.AraiT.Effects of surface roughness of tools on galling behaviour in metal forming (in Japanese). J. Jpn Soc. Technol. Plast., 1993, 34 (393), 1184–1189.
5.
DoegeE.GrocheP.BobkeT.Application of adhesion theory to friction and wear processes in hot die forging. Advd Technol. Plast., 1990, 1, 27–33.
6.
SeuxM.LevequeR.Improvement of service life for MPM H13 mandrels. In Proceedings of Conference on Mechanical Working and Steel Processing, 1988, pp. 47–55.
7.
TsujiN.AbeG.FukauraK.SunadaH.Effect of testing atmosphere on low cycle fatigue of hot work tool steel at elevated temperature (in Japanese). Tetsu-to-Hagané (J. Iron Steel Inst. Jpn), 1995, 81 (6), 661–666.
8.
TsujiN.AbeG.FukauraK.SunadaH.Structural change of hot working tool steel during low cycle fatigue at elevated temperatures (in Japanese). Tetsu-to-Hagané (J. Iron Steel Inst. Jpn), 1994, 80 (8), 664–669.
9.
BernsH.Strength and toughness of hot working tool steels. Tool Mater. Molds Dies, 1987, 45–65.
10.
HemphillR. M.WertD. E.Impact and fracture toughness testing of common grades of tool steels. Tool Mater. Molds Dies, 1987, 66–91.
11.
TsubouchiK.AkiyamaM.OkuyamaT.Development and optimization of carbide-reinforced tools and application to hot rolling of stainless steel. Trans. ASME, J. Tribology, October 1997, 119, 687–693.
