temper temperature
2.The result indicated that 25Cr2MoVA steel has high temper resistant stability after quenching and tempering. When the temper temperature increased above 660℃,it still has high strength and plasticity. When it is tempered below 350℃,the steel still has high temperature strength and extensibility.
3.The tough strengthening heat treatment technique in 65Nb steel used as tool is studied sy stematically in this paper. The influence of quenching heat- ing temperature, holding time and temper temperature on the structure and properties in 65Nb steel is also discussed here. The heat treatment for the optimal combination of strength and tough in 65Nb based on a number of experiments has been recommended.
4.The effects of quenching temper ature, aging temperature and time on microstrain △a/a have been investigated by means of X-ray diffraction. As shown in the electron transmission micro graph the reverted austenite disperses along ihebound aries of martensite, thus improving the impact toughness ak.
5.The quantitative relationship of pulp yield or residual lignin contents with some variables,e. g. cooking temper- ature,time to and at temperature,Na_2SO_3 or NaOH charge,and AQ addition as well as Na_2SO_3 or NaOH concentra- tion in the cooking liquor during neutral sodium sulfite pulping(NS),kraft pulping(KP)and Soda-AQ pulping of wheat straw were studied on a laboratory scale.
6.Effect of intercritical quench on the high temperature temper embrittlement of 1Cr17Ni2 steel has been studied in the paper The results have shown that the intercritical quench can inhibit high temperature temper embrittlement effectively After intercritical quench,the brittlement temperature is decreased with a change of fracture morphology from quasicleavage to dimple,and greater enrichment of alloy elements in δ ferrite and matrix That is the reason why the steel possesses high strength,high toughness after intercritical quench
7.Abstract: In this paper the experimental research of hydra ulic oil used on a certain composite gearbox are carried on．The experimental fo rm ulas are drawn respectively between viscosity、density、specific heat and temper ature．The function of viscosity to temperature and pressure is deduced．The com parative analysis among the new oil、used oil and ordinary antifriction oil ind icates the performance of the specitic oil is excellent．These conclusions are b eneficial to the advanced analysis of the vehicle transmission system and formul ate the manual of relevant armored caterpillar.
8.In this paper the experimental research of hydra ulic oil used on a certain composite gearbox are carried on．The experimental fo rm ulas are drawn respectively between viscosity、density、specific heat and temper ature．The function of viscosity to temperature and pressure is deduced．The com parative analysis among the new oil、used oil and ordinary antifriction oil ind icates the performance of the specitic oil is excellent．These conclusions are b eneficial to the advanced analysis of the vehicle transmission system and formul ate the manual of relevant armored caterpillar.
9.Because lof the temperature tempo, I temporarily lost temper to my&nbsip;contemporary in the tem rq le.
10.So they are very significant in engineering and academia to investigate the temper embrittlement of the 2.25Cr-1Mo steel used in the hydrogenation reactors and predict the Fracture Appearance Transition Temperature (FATT) of 2.25Cr-1Mo steel on the basis of emergent technology.
