ugg stivali Hot rolling of Cu-based shape memory a

Hot rolling of Cu-based shape memory alloys

【... Tns. 1984,15 A. 1977 Received: January 28, 1994 Cr12 steel heat treatment parameters on mechanical properties of the present University of Mining (221008) Strong single-Ying Wai Ping-Fang Li Zhi Liyun Te main 『』【Abstract】 I6 a Regression analysis is empty. The temperature of the quenching, cold temperature, back to the r temperature Crl2 the hardness, strength,[link widoczny dla zalogowanych], toughness and wear resistance of the shaped ring. The results show that. The optimum heat treatment process for the 940 ℃ oil quenching a 2gO ℃ back. 】【Pod t-Cr1-2 three-limonene limonene force of Lan} = each private school girl friends, force t pier TheInfluenceofHeatTreatmentParametersontheMechanicalPropertiesofSteelCr12Qi ~ ngYinghuaiShunL [yunWangB [ngl'angLiZhi [A [~ Stract] The [n {luenceofheattreatmentparameterssuchaquenchingtemperature,[link widoczny dla zalogowanych], freezingtreatment, tem-peringtemperature011thehardn ~ s. st ~ gfhttoughnessandresistanceofsteelCrl2weinvestgated. There_sahsshownthattheoptimumheattreatmenttechnologyofs ~ eelCrl2isoilquenchingE940 ℃ andtemperingt220 ℃ [Keywords] steelCrl2techno [ogicMparame: ermechanicalproper ~ y1 lead the blind on the Crl2 heat treatment of steel, tons of information from abroad to see, quenching temperature can be divided into three categories: First, 950 ~ 1000 \℃ quenching + l80 ~ 220 ℃ tempered} Second, i000 ~ 1050 ℃, if in 1030 ~ 1040 \℃ tempered cut out obvious secondary hardening effect,[link widoczny dla zalogowanych], these deal with the general requirements for hard red} Third, the field station 950950 ℃, but reported less. can be seen, Crl2 heat treatment of steel and mechanical parameters of the fat of Education further study the relationship between Therefore, this article use different heat treatment parameters, systematic study of the performance of steel crl2 to find the best heat treatment of the steel specification, give full play to its performance potential. 2 2.1 Materials test methods bearing in mind Two treatment processes used $ 50mm round steel forged by the mechanical properties of specimens made of metallographic specimens, the following process according to preprocessing _I】: 1050C × 1.5h! limonene blue! a three-5O0 ~ 400 ℃ 860 ℃ × 0.5h Zhu 750 \heat treatment parameters and the quantitative relationship between performance, we use an orthogonal regression design,[link widoczny dla zalogowanych], the choice of L8 (2) array, examine the quenching temperature (a '), cold temperature (), tempering temperature () for performance effects. the factor level coded as shown in Table 1. make x a!, x a ~-,---(-- 30), x, a,[link widoczny dla zalogowanych]! so results can be obtained by the following regression equation Y a 6 +. Shu +6 {X2 +63 X3 + XtXz + blXL Mexico +66 X2X3 + Island XLX2Xj prepared cytokines bat wrapped in code I wrapped Tt <℃) <℃) Ta (℃ 1 on the level of (+ I) 15520 lower level (a I) a 75 zero (0) 980 370 45 150 where variable interval; xt, xz, x is to be examined garden Ix1x2, xLx, x2x and xx: x is the possible interaction between Ib. is constant} b ~ b for the regression equation coefficients , its absolute value is too small, said the importance of the garden or interactions. pilot program arranged as shown in Table 2. To the system of heat treatment parameters on mechanical properties of the shaggy * Male 32 years old, who touch, mining machine Xiang lecturer. \process \
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