The inherent variation in microstructure of as –cast pearlitic irons such as gray pearlitic malleable and modular often makes preliminary heat treatment necessary in order to assure desired uniformity of subsequent induction hardening results .

在當–cast珠光體鐵上微結(jié)構(gòu)的固有變化例如灰色珠光體展性和模件經(jīng)常使得初步熱治療是必要的為了保證期望均一隨后感應加熱淬火結(jié)果情欲综合。

The peritectic alloys may be classified into two types with quite different behaviours of solid solubility metastable extension.

用點陣參數(shù)法研究了在熔體淬火條件下若干簡單金屬與類金屬在Ag中固溶度的亞穩(wěn)擴展一级一级a爱片免费免免。

The primary object of the present invention is to provide a substantially lead free alloy that is press quenchable.

本發(fā)明的主要目的是提供可模壓淬火的基本不含鉛的合金。

The equilibrium value of D〓 fundamentally and reversibly changes with respect to the annealing and quenching above the Curie temperature.

磁導率衰減平衡值對高于Curie溫度的循環(huán)退火和淬火是可逆變化的黄色网站黄色网站欧洲。

In the spectrochemical analysis of high speed steels with a small current activated a.c.

一系列實驗的結(jié)果指出欧美日韩成年人色免费看片，用小電流(5安)電弧光源時，鉻的光譜分析結(jié)果由于試樣是退火組織或淬火組織而有差別最好看的日韩中文字幕视频，這個差別又隨著鋼中含碳量的增加而增加永久看欧洲大片。

The experiment results indicate that a hardened layer is obtained on the surface of the materials after two kinds of surface hardening. Microstructure of the hardened layer is fine spiculate martensite which can help to improve the wear and friction properties of the materials.

研究結(jié)果表明：經(jīng)2種表面淬火后，材料的表面得到一均勻的硬化層试看120秒国产很黄很爽，其組織為細針狀的馬氏體組織亚洲熟女激情视频网，材料表面的耐磨性和摩擦系數(shù)得到了顯著的改善。

The surface of 20 steel was treated by low temperature gas multicomponent thermochemical treatment .

對20鋼表面進行低溫氣體多元共滲日本一区二区色色，再進行高頻感應加熱快速淬火與回火處理国产精品黄色网。

A metastable helium atomic beam effused out of atom source is firstly cooled transversally by laser. This well-collimated atomic beam traveling through the light standing-wave whose direction is perpendicular to atomic beam is quenched, and channeling effect happens in atomic density distribution.

亞穩(wěn)態(tài)原子束從原子源噴出后首先對其進行橫向激光冷卻欧美色欧美亚洲重口二区，準直后的原子束穿過與之垂直的激光駐波場時發(fā)生淬火過程，原子的密度分布出現(xiàn)溝道化效應国产乱论色网站，給出基于光掩模制作納米圖形的基本原理在线免费观看黄片av、理論分析及模擬結(jié)果。

In this method residual stresses were evaluated using a fracture mechanics approach,that is,the crack opening displacements measured by digital speckle correlation method at a point on the edge of a plate as a rack was introduced and extend from the edge were used to deduce the state of stresses that existed in uncracked plate.

提出一種簡便的殘余應力檢測方法久久精品免费视频60-70，利用數(shù)字相關技術檢測裂紋擴展過程中試樣表面的變形黄色片视频公司视屏视频，應用斷裂力學理論計算出殘余應力分布。通過梁彎曲對試驗結(jié)果作了驗證并與應變測量結(jié)果進行了對比黄色视频免费在线无限观看，殘余應力的檢測結(jié)果與理論值標準差為1.28MPa日夲AAAAA性爱午夜免弗视频。對淬火和焊接殘余應力分別作了檢測。實際應用表明所提出檢測方法具有準確国产狼友、高效和使用簡便的特點

The influence of untransformed austenite areas on the properties of austenitic-bainitic ductile iron is discussed.

該文用彩色金相技術顯示了奧氏體—貝氏體球墨鑄鐵中未轉(zhuǎn)變奧氏體區(qū)的組織女生的鸡鸡的黄色视频，用定量金相研究了等溫淬火溫度和時間對未轉(zhuǎn)變奧氏體區(qū)的影響，討論了未轉(zhuǎn)變奧氏體區(qū)對奧—貝球鐵性能的影響国内自拍网。