Effect of the viscosity of the UZSP-1 polymeric quenching medium on its hardening capacity

The UZSP-1 polymer quenching medium is a very efficient domestic substitute for quenching oils. The stability of the properties of water-based polymer quenching media depends largely on the molecular weight characteristics of the polymer component. The molecular weight of the polymer affects the viscosity of the polymer concentrate used for preparing the quenching medium. The present work is devoted to investigation of the effect of the viscosity of the initial UZSP-1 concentrate on the quenching capacity of aqueous solutions with different polymer contents.Translated from Metallovedenie i Termischeskaya Obrabotka Metallov, No. 3, pp. 28–31, March, 1995.     

A study of the cooling kinetics of bearing steel in UZSP-1 polymer quenching medium

The problem of replacing quenching oils by relatively inexpensive and fireproof media based on water is very important for machine-building plants. The present paper is a study of the possibility of using a UZSP-1 polymer quenching medium for quenching parts of roll bearings from steels of the ShKh15 type. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 14–17, July, 1997.     

Quenching of ball-bearing steels and bearing parts in polymer medium UZSP-1

Results of a study of the effect of quenching in UZSP-1 quenching medium on the properties of ball-bearing steels ShKh15, ShKh15SG, ShKh20SG and data on practical use of solutions of UZSP-1 for quenching parts of bearings produced from various steels and subjected to heating for quenching by various methods are presented. Steel from commercial heats has been studied. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 3–7, February, 1999.     

Estimation and control of the properties of the polymer quenching medium UZSP-1 for quality heat treatment of steels

The international standard ISO 9950: 1995 (E) has been put into action for oils, and an analogous document is being worked on for synthetic quenching media. In this connection, it is important to determine the requirements to be imposed on these media for evaluating and controlling their parameters in order to provide the requisite quality of heat treatment. The present paper describes the results of a study of the properties of the polymer quenching medium UZSP-1 conducted with the aim of developing specifications for the medium. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 17–20, July, 1997.     

Use of the UZSP-1 quenchant for sprinkling quenching of gears

Results of the use of UZSP-1 polymer quenchant at the Ryazan Machine Tool Plant for sprinkling quenching of gears fabricated from heat hardenable and carburizing steels after HFC heating are presented. The effect of long-term (for about 15 years) storage of UZSP-1 concentrate on the cooling and operating properties of the hardening compounds is studied. __________ Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 33–36, June, 2007.     

Comparative evaluation of the cooling capacity of bischofite and its aqueous solutions

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 28–29, February, 1990.     

控制冷却工艺对Ti微合金化中碳钢板组织和性能的影响

采用控制轧制-控制冷却-淬火-回火工艺制备20 mm 厚的Ti微合金化中碳钢板,研究了控制冷却工艺(冷却速度)对该钢有效晶粒尺寸和析出相的影响,并探讨了其强韧化机理。结果表明:冷却速度越快,有效晶粒尺寸越小,马氏体板条宽度越窄,含Ti析出相越细小,使其兼具高强度和良好的塑性韧性。主要是由于快速冷却保留了轧制时获得的晶体缺陷和形变能,使再加热奥氏体细化,而且快速冷却抑制了Ti在冷却过程中析出,使Ti处于过饱和状态,再加热过程中逐渐析出细小的含Ti析出相,能更有效地阻止奥氏体晶粒长大。有效晶粒细化以及纳米级含Ti析出相使该钢板具有良好的力学性能。     

冷却速度对微合金化中碳非调质钢组织和性能的影响

通过热处理试验模拟了曲轴用微合金化中碳非调质钢经过小变形量条件的闭式模锻后获得的粗大组织,并进行相应的力学性能测试,研究了冷却速度和微合金元素Ti、Nb对中碳非调质V钢组织和力学性能的影响。结果表明,V-Ti-Nb钢炉冷后的综合力学性能最佳,抗拉强度达到960.6 MPa、屈服强度达到672.1 MPa、断后伸长率达到17.5%、冲击吸收能量达到22.9 J。冷却速度的增加使得V钢的抗拉强度和屈服强度均提高了近120 MPa,由于贝氏体这类硬相的存在,导致塑性下降,但是由于原始奥氏体晶粒尺寸的细化,使得冲击性能没有发生明显变化。Ti和Nb的加入,V-Ti-Nb钢由于珠光体片层间距的细化及(V, Ti, Nb)(C, N)的析出强化,屈服强度提升了76.5 MPa;珠光体片层间距和原始奥氏体晶粒尺寸的细化是V-Ti-Nb钢冲击性能改善的主要原因。     

淬火温度对液体淬火介质冷却能力的影响

利用KHR-02淬火介质检测仪测试了不同温度的自来水和不同浓度PAG淬火液在850℃和500℃淬火冷却曲线,并对试验曲线进行了分析对比.试验结果表明:不管在850℃还是500℃,温度对自来水的冷却能力的影响主要是通过延长蒸汽膜期的时间来实现的,并且两个过程是有区别的,只有水的温度达到60℃以上后,500℃淬火过程中的最大冷速才开始降低;不管850℃淬火还是500℃淬火,PAG的浓度都是影响其冷却能力的主要因素之一;由于PAG在低温阶段可以通过浓度调节冷速,并且没有蒸汽膜阶段,将其应用到铝合金固溶淬火过程,用于控制铝合金变形效果会更好.     

合金元素钼和冷却速度对中碳非调质钢组织和性能的影响

利用膨胀仪研究了含Mo和不含Mo两种中碳非调质钢的连续冷却转变过程,分析了不同冷速下两种钢的组织转变和力学性能,测定了两种钢的室温抗拉强度和冲击功,利用扫描电镜观察了断口形貌.研究结果表明:Mo显著增加中碳非调质钢过冷奥氏体的稳定性,推迟了先共析铁素体和珠光体的转变,有利于转变为较多的针状铁素体.对于含Mo的2号钢,在冷速为1～3℃/s时,可以获得大量的针状铁素体组织.由于添加了0.089%的Mo,使2号钢的空冷组织得到细化,其冲击韧性比1号钢提高了约45%.