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        當前位置:首頁>新聞中心>新聞動態>熱作模具鋼在高溫下熱穩定性什么樣?

        熱作模具鋼在高溫下熱穩定性什么樣?

        來源:http://www.environmentandpeople.net/ 日期:2022-03-29 發布人:guanli


        熱作模具鋼在高溫下熱穩定性高(熱作模具鋼的含碳量)
        Hot working die steel has high thermal stability at high temperature (carbon content of hot working die steel)
        熱作模具鋼工作時,承受很大的沖擊。模具型腔與高溫金屬接觸,反復加熱冷卻,使用條件非常惡劣。為了滿足熱作模具鋼的應用要求,熱作模具鋼應具有以下基本特性:高溫強度高,韌性好。熱作模具尤其是熱鍛模具在工作時承受很大的沖擊力,沖擊頻率很高。如果模具沒有高強度和良好的韌性,它們將容易破裂。耐磨性好,因為熱作模具鋼在毛坯變形時不僅要承受摩擦磨損,還要承受高溫氧化腐蝕和氧化鐵皮屑的打磨,所以熱作模具鋼需要有較高的硬度和防粘著性。
        When hot working die steel, it bears great impact. The mold cavity is in contact with high-temperature metal, heated and cooled repeatedly, and the service conditions are very bad. In order to meet the application requirements of hot work die steel, hot work die steel should have the following basic characteristics: high temperature strength and good toughness. Hot working dies, especially hot forging dies, bear great impact force and high impact frequency. If molds do not have high strength and good toughness, they will be easy to crack. Good wear resistance, because the hot work die steel not only bears friction and wear when the blank is deformed, but also bears high-temperature oxidation corrosion and grinding of iron oxide scurf, so the hot work die steel needs to have high hardness and anti adhesion.
        高熱穩定性。熱穩定性是指鋼材在高溫下長時間保持其常溫力學性能的能力。在熱模具中工作時,接觸的是熾熱的金屬甚至液態金屬,所以模具的表面溫度很高,一般為400~700℃。這就要求熱作模具鋼在高溫下不發熱,熱穩定性高,否則模具會發生塑性變形,導致坍塌失效。
        High thermal stability. Thermal stability refers to the ability of steel to maintain its mechanical properties at room temperature for a long time at high temperature. When working in the hot mold, the contact is hot metal or even liquid metal, so the surface temperature of the mold is very high, generally 400 ~ 700 ℃. This requires that the hot working die steel does not heat at high temperature and has high thermal stability, otherwise the die will have plastic deformation and collapse failure.
        優異的抗熱疲勞性能,熱作模具的工作特點是反復加熱和冷卻,模具一次加熱膨脹,另一次冷卻收縮,產生很大的熱應力,這種熱應力是反方向交替產生的。在反復熱應力作用下,模具表面會形成網狀裂紋(裂紋),稱為熱疲勞。熱疲勞引起的模具過早斷裂是熱作模具失效的主要原因之一。因此,熱作模具鋼一定是具有良好的熱疲勞性能。
        Excellent thermal fatigue resistance. The working characteristics of hot working die are repeated heating and cooling. The die expands once and shrinks again, resulting in great thermal stress. This thermal stress is generated alternately in the opposite direction. Under the action of repeated thermal stress, network cracks (cracks) will be formed on the die surface, which is called thermal fatigue. The premature fracture of die caused by thermal fatigue is one of the main reasons for the failure of hot working die. Therefore, hot working die steel must have good thermal fatigue properties.
        高淬透性。一般熱作模具的尺寸都比較大,特別是熱鍛模具。為了使整個模具截面的機械性能均勻,要求熱作模具鋼具有高淬透性。良好的導熱性。為了防止模具積聚過多熱量,導致機械性能下降,需要盡可能降低模具表面溫度和模具內部的溫差,這就要求熱作模具鋼具有良好的導熱性。良好的成型工藝性能,滿足成型需要。
        High hardenability. Generally, the dimensions of hot working dies are relatively large, especially hot forging dies. In order to make the mechanical properties of the whole die section uniform, the hot work die steel is required to have high hardenability. Good thermal conductivity. In order to prevent the die from accumulating too much heat, resulting in the decline of mechanical properties, it is necessary to reduce the temperature difference between the die surface and the die interior as much as possible, which requires the hot working die steel to have good thermal conductivity. Good molding process performance to meet the needs of molding.
        以上就是為大家介紹的有關山東熱作模具鋼的詳細介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯系我們.我們將以專業的態度,為您提供服務http://www.environmentandpeople.net
        The above is the detailed introduction of Dongdong hot working die steel. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.environmentandpeople.net

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