Imported steel mold _ S690PM_ AsiaVest Leizhou S690PM provided by Dongguan City An Yongwei steel mold shop. Dongguan City An Yongwei mold steel shop (www.dgyongwei.com) is specialized in "Die steel, DC53, SKD11.SUS440C, SUS420" of the enterprise, the company of "honesty, hard service" concept, to provide you with the most quality products and services. Welcome to inquire! Contact: Simon / R. Mold continued heat, after working under pressure conditions, local plastic deformation and failure occur. For example, commonly used in the production of hardened steel or carbon tool steel, bakelite mold in corners at maximum load generated by plastic deformation occurs surface wrinkles, depressions, pits, etc., or even crooked edges collapse sub-surface deformation space to expand resulting in increased and the flash scrap plastic parts. If it is small molds on large-tonnage presses overload use S690PM, more prone to this failure mode. This is mainly due to the failure to produce the mold cavity surface of the hardened layer is too thin, and the hardness of the matrix, compressive strength, insufficient deformation resistance; or the mold during the heat treatment is insufficient tempering, resulting in instability or organization not eliminate residual stresses . ④ plastic fracture most complex shapes, there are a lot of concave corners, thin edge, these parts could easily lead to stress concentration S690PM price, when lack of toughness, it will lead to cracking. Failure is mainly due to the structure of the structural stresses, generated by the temperature difference, thermal stress, or because of insufficient tempering, in the case of residual austenite into martensite temperature, causing local volume expansion, the stress generated inside the mold due. In order to make low heat mold mold high toughness steel manufactured by high strength can be obtained after quenching need, good toughness and thermal stability and other properties of best fit S690PM manufacturers require steel austenite grains keep small and evenly distributed. For small die on the job or for the manufacture from impact loads, and relatively shallow groove large presses forging dies, the austenite grain size of steel should ensure that no less than 8-9; for medium and large forging mold, austenite grain size of steel should ensure that no less than 10-11 (3) low heat high toughness steel mold tempering low heat with a high toughness after quenching and Bayesian Markov organization S690PM mixed material, in After tempering below 550-600 ℃, the highest hardness and heat resistance of the steel in the optimum temperature haggard fire