宏旭—邊溝蓋板模具—公路邊溝蓋板模具

水溝蓋板模盒的疲勞斷裂性能主要取決于其強度、韌性、硬度、以及材料中夾雜物的含量。當水溝蓋板模盒的工作溫度較高時,會使硬度和強度下降,導(dǎo)致模具早期磨損,或產(chǎn)生塑性變形而失效。因此,模具材料應(yīng)具有較高的抗回火穩(wěn)定性,以保證塑料蓋板模具在工作溫度下,具有較高的硬度和強度。有些模具在工作過程中處于反復(fù)加熱和冷卻的狀態(tài),使型腔表面受拉、壓力變應(yīng)力的作用,引起表面龜裂和剝落,增大摩擦力,阻礙塑性變形,降低了尺寸精度,從而導(dǎo)致模具失效。冷熱疲勞是熱作模具失效的主要形式之一,這類模具應(yīng)具有較高的耐冷熱疲勞性能。

隨著我國工業(yè)水平的不斷發(fā)展,我國的模具行業(yè)也隨著有了飛速的發(fā)展,很多廠家的水溝蓋板模盒制造能力已經(jīng)達到了國際先進水平。但我國西部地區(qū)的模具發(fā)展還處于低水平階段需要大量的技術(shù)工人的支撐。

The fatigue fracture performance of the channel cover plate die box mainly depends on its strength, toughness, hardness and the content of inclusions in the material. When the working temperature is high, the hardness and strength of the die box will decrease, which will lead to the early wear of the die or plastic deformation and failure. Therefore, the die material should have high tempering stability to ensure that the plastic cover mold has high hardness and strength at working temperature. Some dies are in the state of repeated heating and cooling in the working process, which makes the cavity surface subject to tension and pressure variation stress, causing surface cracking and spalling, increasing friction force, hindering plastic deformation, reducing dimensional accuracy, thus leading to die failure. Hot and cold fatigue is one of the main failure forms of hot working dies, which should have high resistance to cold and hot fatigue.

With the continuous development of China's industrial level, China's mold industry also has a rapid development, many manufacturers of ditch cover mold box manufacturing capacity has reached the international advanced level. However, the mold development in Western China is still at a low level, which needs the support of a large number of technical workers.