1) 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。
2) sub-critical quenching
亚温淬火
1.
The compound strengthening and toughening of sub-critical quenching and cold-drawing deformation on 20CrMnMo steel was studied.
对20CrMnMo进行亚温淬火热处理和冷拉形变的复合强韧化研究。
2.
Mecrostructure and mechanical properties of 20SiMnTi steel have been studied and analyzed when treated by different heat treatment process, by changing the sub-critical quenching temperatures.
研究了２０ＳｉＭｎＴｉ钢经过不同热处理工艺处理，分析随亚温淬火温度的变化，材料的组织和力学性能的变化规律。
3) intercritical hardening
亚温淬火
1.
The results show that the main reasons for causing the quench cracking are coarse grain size,excessive inclusion,banded structure of raw materials,some harmful elements such as Sn,Sb,As as well as excessive P,and intercritical hardening can prevent the parts from quench cracking.
结果表明,原材料局部夹杂物偏析较重,晶粒粗大,带状组织和Sn、Sb、As有害元素的存在及P含量较高是导致开裂的主要原因,采用亚温淬火可防止零件的开裂。
2.
The intercritical hardening process for the camshaft thrust piece was proposed by analyzing the reason of quenching crack.
对凸轮轴止推片产生淬火裂纹的原因进行了分析,提出了亚温淬火工艺,并在实践中应用,消除了淬火裂纹。
3.
Various factors which affect the intercritical hardening process of U shaped steel have been studied.
对影响U型钢亚温淬火工艺的各因素进行了试验。
4) sub-temperature quenching
亚温淬火
1.
The austenite inverse phase transformation sub-temperature quenching of 27SiMn steel;
27SiMn钢奥氏体逆相变亚温淬火
2.
Under the condition of adequate intensity for 20MnMo steel forgings,using the method of sub-temperature quenching+high-temperature tempering heat treatment process can obviously improve the low-temperature impact toughness for forgings.
在20MnMo钢锻件强度足够的条件下,用亚温淬火+高温回火工艺热处理可显著提高锻件的低温冲击韧性。
3.
Furthermore,the best grain refinement heat treatment process for this material is twice sub-temperature quenching+high-temperature tempering process.
指出该材料最佳的晶粒细化热处理工艺是:两次亚温淬火+高温回火工艺。
5) subcritical quenching
亚温淬火
1.
The effect law of quenching and tempering temperature with subcritical quenching on the strength and hardness of 45 steel was studied by orthogonal regressive principle,the microstructure and property of the steel after subcritical quenched were analyzed.
采用正交组合回归设计试验方法研究了亚温淬火条件下,淬火温度和回火温度对45钢强度及硬度的影响规律,并分析了该钢亚温淬火后的组织与性能。
2.
It is shown that with the incresaing of subcritical quenching temperature,the substructure of martensite in dual-phase microstructure changes form twin-type to dislocation type,and the deformation capability and drawing properties of both phases are improved.
结果表明,随着亚温淬火温度的升高,双相组织中马氏体的亚结构由孪晶型变成位错型,两相的变形能力和拉拔性能都得到改善。
3.
low bainite and normalized structure respectively and then undergo subcritical quenching have been investigated.
研究了原始组织为马氏体、贝氏体和正火态组织的 2 0 Si Mn Ti钢经亚温淬火后的强韧性。
6) Intercritical quenching
亚温淬火
1.
The feasibility of using 20MnSi steel to prepare saw was analysed, the intercritical quenching technique for 20MnSi saw to enhance the strengthening and toughening was studied.
分析利用20MnSi钢制备棉机锯片的可行性,研究了利用亚温淬火提高20MnSi钢棉机锯片强韧性的工艺。
2.
The influence of intercritical quenching on the microstructure, strength and toughness were investigated.
本文选择了一种采用TMCP+RPC工艺生产且含有Cu、Ni、Mo、Nb、B等化学元素的低碳贝氏体钢钢板,研究了亚温淬火温度对其组织和性能的影响。
3.
Microstructure of 14MnNb steel after different intercritical quenching treatments was studied by scanning electron microscopy.
用扫描电子显微镜对14MnNb钢不同工艺亚温淬火试样的组织进行了比较研究,并用残留硬度法对亚温淬火组织80%变形量冷轧后再结晶动力学进行了研究。
补充资料：N-二丙基亚硝胺,二正丙基亚硝胺
国标编号 ----
CAS号 621-64-7
分子式 C6H14N2O;ONN(CH2CH2CH3)2
分子量 130.19
金黄色液体;沸点 206℃ ，溶解性 溶于乙醇和乙醚;密度：相对密度(水=1)0.9163 稳定性;危险标记 ;主要用途:用于医药和食品分析研究
2.对环境的影响:
毒理学资料及环境行为
急性毒性：LD50480mg/kg(大鼠经口);487mg/kg(大鼠皮下);689mg/kg(小鼠皮下)
致癌性判定：人为可疑性反应，动物为阳性反应。
来源：N-亚硝胺类化合物由亚硝化剂(亚硝酸盐)和胺类在一定条件下，经亚硝化作用生成。在环境中大量存在亚硝基化剂和胺类，例如有机合成，染料、橡胶制造和食品着色防腐中的亚硝酸钠和胺类，化肥中的硝酸铵，废气中排出的氮氧化物等等，这些亚硝胺的前体物质均可在环境中，动物体内，人体内，食品中合成。在面粉、奶酪、烟熏肉、鱼及其他食品中均可检出。合成切削油也可能含有亚硝胺类物质。
3.现场应急监测方法:
4.实验室监测方法:
石油化工废水及污灌蔬菜中N-亚硝基化合物的测定(气相色谱法)，许后效等，《化工环保》，5，296，(1985)
5.环境标准:
美国(1982)N-二正丙基亚硝胺用作水果、蔬菜或其他田间作物的杀虫剂时，其亚硝胺的总浓度必须低于0.05ppm(工业品)
6.应急处理处置方法:
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条