1) normalizing temperature
正火温度
1.
Influences of normalizing temperature and tempering temperature on mechanical properties and microstructure of ZG310-570 cast steel were investigated.
研究了正火温度和回火温度对ZG310-570铸钢组织和力学性能的影响。
2) isothermal normalization
等温正火
1.
Test of isothermal normalization and its application in the part blanks of gear box were investigated in this paper The results show that the part blanks treated by isothermal normalization have a finer grain size,more homogeneous microstructure than these treated by conventional normalization.
对变速箱零件毛坯进行了等温正火试验。
2.
This paper introduces automatic production line for isothermal normalization with residual heat from forged steel parts and installed computer distributed control system,(which can be used for heating up gear billet and normalizing isothermally for the second time)developed by our company,which form a complete set with AMP70 hot former made in Switzerland.
介绍了我厂研制的与引进瑞士AMP70热镦机配套的具有计算机集散式控制系统的锻坯余热等温正火自动生产线 (可兼作二次加热齿坯等温正火 )。
3) high temperature normalizing treatment
高温正火
4) subcritical normalizing
亚温正火
1.
Effect of subcritical normalizing on toughness of non-quenched and tempered steel with ferrite-pearlite structure;
亚温正火对铁素体珠光体型非调质钢韧性的影响
2.
Effect of Subcritical Normalizing on Structure and Properties of Non-Quenched-Tempered Steel 30Mn2V;
亚温正火对非调质钢30Mn2V组织和性能的影响
3.
When the holding temperature of the subcritical normalizing (wing cooling) is 780℃,the 40SiMnCrNiMoA steel can obtain the principal martensite and bainite mixture phase structure,and has small amount ferrite in it,its grains are fine and even.
40 Si Mn Cr Ni Mo A钢 780℃亚温正火 (风冷 )后 ,其组织为以板条马氏体和条状无碳贝氏体为主、并有少量细条状铁素体的复合组织 ,晶粒细小均匀。
5) Isothermal normalizing
等温正火
1.
Discussion on isothermal normalizing of forging steel billet used to make gears of automobiles;
浅谈汽车齿轮锻造毛坯的等温正火工艺
2.
When carburizing automobile pinion parts made of 20CrMoH steel were treated by isothermal normalization,the cooling rates at various sections during the cooling process before isothermal normalizing and after austenitization were in disparity because of complexities of the pinion sections,which lead to diversity of microstructure and non-homogeneity of hardness at different sections.
20CrMoH钢汽车轴齿锻造毛坯等温正火处理时,由于轴齿截面变化复杂,在奥氏体化后等温正火前的冷却过程中各截面冷却速度不一致,使显微组织差异性加大,各截面硬度不均匀,切削后表面状态也不一致,严重影响了产品质量。
3.
After analyzes the influence of automobile cemented gear rough,which is adopted the method of utilizing the residual forging heat for normalizing and isothermal normalizing,on it's structure,hardness,and distortion during cementation and quenching,the feasibility and necessity of the way of utilixing the residual forging heat for isothermal normalizing as pre-heat treatment are determined.
探讨了利用锻造余热对汽车渗碳齿轮毛坯进行等温正火和普通正火后对齿轮的组织、硬度及渗碳淬火变形等的影响,确定了锻造余热等温正火作为预先热处理的可行性和必要性。
6) low temperature normalizing
低温正火
1.
The influences of raw material mixture ratio on the microstructure and mechanical properties were studied after the same low temperature normalizing.
采用不同原料配比的生铁和废钢,通过硅铁及电极石墨增碳剂的调节,在相同铸造工艺条件下,制成化学成分基本相同的球墨铸铁;经相同的低温正火热处理后,对各原料配比球墨铸铁的组织和性能进行了研究;根据实际生产需要,提出了合理的原料配比方案。
补充资料：正温度系数热敏陶瓷电阻器
分子式：
CAS号：
性质：又称PTC热敏陶瓷电阻器。具有显著正温度系数特性的半导体热敏陶瓷。一类以钛酸钡或钛酸钡基固溶体为主晶相的半导体陶瓷材料。其主要特性是电阻率能在20～30％的狭窄温区内变化6～8个数量级之多。居里温度通常在-40～+38℃之间。耐电压强度很高。以碳酸钡和二氧化钛为原料，采用施主掺杂技术，用镧、铈、钕、钐、钇、铋、锑等的三价离子部分取代四价钛离子，配料后经高温(1350℃左右)烧结可形成固溶体，实现半导化，其电阻率可达100Ω·cm以下。配方中常加入Al2O3、SiO2、TiO2(又称AST)形成玻璃相，吸收原料中影响半导化的有害杂质(如钾、钠、亚铁、镁离子等)。为提高正温度系数效应，改善物理性能，常添加少量氧化锂、氧化锰等。为提高钛酸钡半导体陶瓷的居里温度，可引入钛酸铅；若降低居里温度，可添加钛酸锶，制成(Ba、Pb、Sr)TiO3基高温或低温电阻正温度系数热敏陶瓷。对配料的组成、烧成制度等要求非常严格，若配料组成变动，烧成温度等不稳，控制不当，将影响制品性能甚至将形成绝缘体。可用于制作液面深度探测器、温度控制器、电流限制器、电机及晶体管过热保护器、自控温发热体(如暖风机、美容保健器等)等等。
CAS号：
性质：又称PTC热敏陶瓷电阻器。具有显著正温度系数特性的半导体热敏陶瓷。一类以钛酸钡或钛酸钡基固溶体为主晶相的半导体陶瓷材料。其主要特性是电阻率能在20～30％的狭窄温区内变化6～8个数量级之多。居里温度通常在-40～+38℃之间。耐电压强度很高。以碳酸钡和二氧化钛为原料，采用施主掺杂技术，用镧、铈、钕、钐、钇、铋、锑等的三价离子部分取代四价钛离子，配料后经高温(1350℃左右)烧结可形成固溶体，实现半导化，其电阻率可达100Ω·cm以下。配方中常加入Al2O3、SiO2、TiO2(又称AST)形成玻璃相，吸收原料中影响半导化的有害杂质(如钾、钠、亚铁、镁离子等)。为提高正温度系数效应，改善物理性能，常添加少量氧化锂、氧化锰等。为提高钛酸钡半导体陶瓷的居里温度，可引入钛酸铅；若降低居里温度，可添加钛酸锶，制成(Ba、Pb、Sr)TiO3基高温或低温电阻正温度系数热敏陶瓷。对配料的组成、烧成制度等要求非常严格，若配料组成变动，烧成温度等不稳，控制不当，将影响制品性能甚至将形成绝缘体。可用于制作液面深度探测器、温度控制器、电流限制器、电机及晶体管过热保护器、自控温发热体(如暖风机、美容保健器等)等等。
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参考词条