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The phase transition process of isothermally quenched ductile iron was investigated,the author's opi...

研究了等溫淬火球鐵的相變過程，指出了對等溫淬火球鐵組織命名的看法黄色的网站免费直接进入。

The influence of the K/Na modificator on structure and performance of high chromium cast iron was investigated. The melting and heat treatment process (hardening at 1000℃ and tempering at 450℃) were also obtained.

考察了K/Na變質(zhì)劑對高鉻鑄鐵組織和性能的影響在线观看免费A片视频，確定了合金的熔煉工藝和熱處理工藝，得出最佳的淬火和回火工藝溫度（淬火1000℃+450℃回火）欧美黄色网站哪里有。

Most manufacturers use frequency induction hardening process, after the nitrogenation or chromeplating, nitrogenation of thickness of 0.5 to 2.7 0.6 ㎜, chrome-plated layer thickness ㎜ 0.10 ~ 0.15, mainstream technology for after the chromeplating frequency induction hardening.

目前多數(shù)廠家采用復(fù)合處理蜜桃视频未满在线观看免费，中頻淬火后進(jìn)行氮化或鍍鉻，氮化層厚度為0.5～0.6㎜日韩精品成人网页在线观看视频，鍍鉻層厚度為0.10～0.15㎜激情熟妇无码视频，主流工藝為中頻淬火后鍍鉻。

The causes of extreme distortion of large gear shaft after carburizing and quenching were analyzed,and the distortion-controlling measure such as make preallowance and adopt autempering process are proposed.

分析了大齒輪軸滲碳淬火后齒面產(chǎn)生較大畸變的原因欧美特级视频，找出了適合預(yù)留收縮余量和等溫淬火工藝一级特黄A片在线观看，解決了大齒輪軸的熱處理畸變。

The experimental products include crystal phase quartz, feldspar (alkila-feldspar, albite, K-feldspar), zinnwaldite and topaz, a melt phase and a trace vapour. The solid products were been studied by optics method, electron microprobe and X-ray analysis. The results show that liquidus temperature raises slightly and solidus temperature falls down obviously and that the upper temperature limit raises for the stability field of quartz and topaz, and falls down for the stability field of alkila-feldspar as F contents in crease.

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The steel heat treatment method includes quenching , flash back, anneals and the shell is quenched.

鋼的熱處理方法包括淬火、回火日日摸夜夜爽毛片免费视频、退火和殼體淬火在线看的欧美中文免费网站。

Carburizing, cyaniding, and induction hardening are some of the processes commonly used to produce the case hardening effect.

碳化、氰化国产亚洲精品AA片在线、感應(yīng)淬火是局部淬火中經(jīng)常使用的處理方法加勒比在线精品视频在线观看。

This can be done carburizing, cyaniding, nitriding, carbonitriding, induction hardening, and flame hardening.

這可以通過滲碳劑、氰化99ritv、滲氮九色91、碳氮共滲、感應(yīng)淬火亚洲精品永久无码在线主页、火焰淬火來完成国产综合无码一区二区辣椒。

This kind of defects can be eliminated by controlling S content, avoiding eutectic sulfide, improving sulfide distribution and meliorating quenching process to minish quenching stress.

可以通過控制硫的含量、避免產(chǎn)生共晶硫化物免费看黄刺激视频网站，改善其分布狀態(tài)久久中国a一级A片，改善淬火工藝以減小淬火應(yīng)力來消除。