熱處理專業(yè)英文文摘及翻譯

1、熱處理專業(yè)英文文摘及翻譯標(biāo)題 correcting the tempering temperature during heat treatment糾正在熱處理回火溫度1. the plates of low-speed marine diesel roller chains are made by stamping from 40kh steel bars with a heat treatment of oil hardening from 830-850 and tempering at 520-540 for 3 h. according to specification, after

2、tempering the brinell hardness of all of the plates must be measured and a sampling inspect!ng of the mechanical properties must be made (1 or 2 parts from each lot)the plates are assumed to be acceptable if the impression diameter is 3.93 6.1. 低速船用柴油機(jī)滾子鏈板塊由鋼筋從40kh熱沖壓石油從 830-850硬化處理和回火520-540 3 h.根據(jù)

3、規(guī)范，回火后在所有的板 塊必須測(cè)量布氏硬度和抽樣檢查的力學(xué)性能必須(從每批1或2件)。 板塊如果假定是可以接受的印象直徑3. 9-3. 62. in heat treatment using the same cycle, there has frequently been a quite wide spread in the hardness of the plates after tempering since tempering is done without taking intoconsideration variations in chemical composition with

4、in specification of 40kh steel and in the structure of the parts after hardening.2. in熱處理使用相同的周期屮，經(jīng)常是一個(gè)在硬度相當(dāng)廣泛蔓延 自回火回火后板沒有完成考慮到化學(xué)變化組合內(nèi)40kh鋼鐵和規(guī)范硬 化后的結(jié)構(gòu)部分。3. this article discusses the possibility of introducing an intermediate nondestructive inspection making it possible to correct the tempering cycl

5、e during heat treatment of 40kh steel parts. some investigations have already been made in this direction.3。這篇文章論述了引進(jìn)的可能性中間無損檢測(cè)使其可能糾止在熱 回火周期鋼件的處理40kh. 一些調(diào)查工作已經(jīng)在這個(gè)方向4. the first stage of the investigation was made on 40kh steel samples of heats () and()4. 調(diào)查的第一階段就40kh鋼樣的熱量()和()。5. cylindrical samples

6、() with a length of 120 and a diameter of 25 mm and 70*22*10 mm flat samples()were prepared5o圓柱形樣品()為120的長(zhǎng)度和25毫米和70 * 22 *? 10毫 米(扁平樣品)直徑分別為準(zhǔn)備。6. based on literature data the coercive force(the demagnetizing current in milliamps was measured with a coercimeter) and the residual induction after impul

7、se magnetization br(nominal units) were selected as the parameters of the intermediate inspection. the maxinum strength of the magnetic field in the center of the magnetizing coil was 48000 a/m and the length of the impulse 0 01 sec before the hardness measurement the cylindrical samples were cleane

8、d on lathe with abrasive cloth the rockwell hardness was determined at three points on the generatrix of the cylinder .before measurement of the flat samples one of the 70*22 mm face was ground by 0. 25 mm on a grinder, the brinell hardness was measured at three points on an axial line of these face

9、s.6o根據(jù)文獻(xiàn)資料矯頑力(消磁電流毫安是衡量一個(gè) coercimeter)和剩余上崗后的沖動(dòng)磁化漠(標(biāo)稱單位)被選定為參 數(shù)中間檢查。最高磁場(chǎng)強(qiáng)度在該中心勵(lì)磁線圈48000的a/m和長(zhǎng)度 o. oi秒的沖動(dòng)：之前的硬度測(cè)量對(duì)樣品進(jìn)行了清理圓柱車床，磨料布洛氏硬度在三個(gè)點(diǎn)確定對(duì)氣缸母線測(cè)量前單位樣木的70 * 22毫米 面對(duì)的一個(gè)是地面的上磨床0. 25毫米。布氏硬度測(cè)量三是這些軸 線點(diǎn)的面孔7. to obtain different hardnesses, samples were hardened from780 to 910 for 25 min and tempered at 530

10、 followed by water cooling.7o獲得不同的硬度，淬火樣品從780到910的25分鐘和530鍛煉 z后水冷卻。8. using the method of 2, the correlation coefficients between the values of br, ir and sample hardness after hardening were calculated .for cylindrical samples (32 samples for each heat) of heat , the correlation coefficient is and

11、for heat is8o利用2的方法，相關(guān)系數(shù)之間的澳，ir值和樣品后硬度硬化 進(jìn)行了計(jì)算圓柱樣木(32每個(gè)熱樣本)的熱量，相關(guān)系數(shù)為和 是熱。9. according to the data of 2, for a sample of 32 pairs of observations the random value of the correlation coefficient does not exceed 0.44 with a probability of error of 0.01.9o根據(jù)2的數(shù)據(jù)樣本為32,對(duì)觀測(cè)的隨機(jī)值的相關(guān)性系數(shù)不超過 0. 44與概率誤差為0.0110. for 99 flat samples of the two heats, the correlation coefficients were this is significantly higher than the possible random value of the correlation coefficient(0.25). therefore, between the magnetic characteristi