Heat treatment tests of normalizing,quenching and temperature tempering,double quenching are carried on the material ZG25Mn for the axle box base of electric locomotive.

對(duì)機(jī)車抱軸承箱材料ZG2 5Mn進(jìn)行了正火、調(diào)質(zhì)国产蜜臀av在线、二次淬火的熱處理工藝試驗(yàn)一级一级A片操BB，比較分析了不同工藝的金相組織和機(jī)械性能，闡述了二次淬火的強(qiáng)韌化機(jī)理免费的性开放网络交友网站，認(rèn)為二次淬火可以改善組織久草网视频免费的看，提高強(qiáng)度與韌性。

Because of the importance of hardened layer, coupled with the bigger quenching layer, the higher the cost, so some unscrupulous manufacturers even coated colors by the sword peak coated ink is said to be hardened to trick you, as users should have the coolness and should not be cheated of counterfeiting tool.

由于淬火層的重要性国产精品综合久久久久网，加上淬火層面積越大欧美又大又粗又硬又黄，刀的造價(jià)越高，所以有些無(wú)良生產(chǎn)商甚至用涂顏色的方法在刀峰涂上一層墨色就說(shuō)是淬火處理sese婷婷，以欺騙用戶淫荡性爱视频三级，作為使用者應(yīng)具備清醒的頭腦，不要被假冒刀瞞騙。

By measuring the cooling curve and quench severity of quenching oil at various flow rates,the relationship among the hardening capacity ,quench severity and flow rate was established.

對(duì)淬火油在不同流速下的冷卻曲線和淬火烈度進(jìn)行了測(cè)量欧美熟女黄色录像片，建立了硬化能力国产带绿帽在线视频66、淬火烈度與介質(zhì)流速三者之間的關(guān)系。

Combine the cooling characteristic curve of quench media and the dynamics curve of continuum cooling phase change to select the quench media of materials is very useful, and it can obtain best microstructures and controlled crack polarity or distortion.

文章摘要：提出將淬火介質(zhì)冷卻特性曲線與材料的奧氏體連續(xù)冷卻轉(zhuǎn)變動(dòng)力學(xué)曲線相結(jié)合超碰免费视屏在线，來(lái)選擇材料的淬火介質(zhì)最新免费在线黄色网址，獲得合適的顯微組織并控制材料淬火過(guò)程中的變形、開(kāi)裂傾向精品国产三区。

In this paper, a new technology of laser transformation hardening which could replace the present method of gear case hardening is introduced. Its significant and economic value are analyzed. The key techniques of laser transformation hardening gear , such as surface pretreatment coating and its methods, laser scanning pattern, are discussed in detail.

通過(guò)分析可替代常規(guī)齒輪滲碳淬火的激光齒面淬火新技術(shù)研究的意義及經(jīng)濟(jì)價(jià)值国产AⅤ精品一区二区四区，著重討論了齒面激光淬火的關(guān)鍵技術(shù)--表面預(yù)處理涂層與方法、激光掃描方式亚洲国产黄色视频在线观看。

So, in this paper, H13 isused as study object, its quencher and temper technics are studied too.

因此亚洲第2页亚洲第二，本文決定以H13鋼作為研究對(duì)象，并對(duì)其進(jìn)行淬火免费香蕉成视频在线观看高清、回火工藝研究蜜芽尤物av无码点击进入网站，結(jié)果表明，H13鋼采用二級(jí)鹽浴分級(jí)淬火看a片所有网站，比采用一級(jí)鹽浴分級(jí)淬火能使H13鋼獲得更大的沖擊韌性国产九九视频一区二区三区。

The hardened case ununiformity and quenching cracks of H32058 driven ring gear after the medium frequency induction quenching were analyzed.

分析了H32058從動(dòng)齒圈經(jīng)中頻淬火后出現(xiàn)的淬硬層分布不均和淬火裂紋等缺陷的原因，通過(guò)重新設(shè)計(jì)感應(yīng)器和反復(fù)工藝調(diào)試国产精品自拍1区，利用兩次中頻加熱淬火方式實(shí)現(xiàn)預(yù)熱中頻淬火欧美日韩黄色综合网，獲得了沿齒廓分布的淬硬層在线黄色网站你懂。

The main scope of application: Diamond Cutter welding, carbide saw blades, machining with carbide tools of welding, such as diamond tools, drill, tools, planing, milling cutter, reamer, such as welding and cutting tools; standard parts , bolts of hot upsetting, such as high strength bolts, nuts, etc.; hardware tools, hand tools, heat treatment, such as pliers, wrenches, rotary tools, hammers, axes; all kinds of automobile fittings, motorcycle fittings of high-frequency quenching treatment, such as : crankshaft, connecting rod, piston pin, crank pin, sprocket, camshaft, valves, all kinds of rocker arm, rocker shaft; gearbox various gears, spline shaft, axle bronchitis, all kinds of small shafts, high-frequency quenching, such as various fork of the handle; metal parts of the heat treatment, such as a variety of gears, chain wheel, the wheels, vibrating screen, a variety of shaft, spline shaft, and marketing of high-frequency quenching treatment, etc.; machine tool machine tool industry bed rail, such as the quenching treatment.

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The main scope of application: Diamond Cutter welding, carbide saw blades, machining with carbide tools of welding, such as diamond tools, drill, tools, planing, milling cutter, reamer, such as welding and cutting tools; standard parts , bolts of hot upsetting, such as high strength bolts, nuts, etc.; Hardware tools, hand tools, heat treatment, such as pliers, wrenches, rotary tools, hammers, axes; a variety of auto parts, motorcycle accessories, high-frequency quenching treatment, such as : crankshaft, connecting rod, piston pin, crank pin, sprocket, camshaft, valves, all kinds of rocker arm, rocker shaft; gearbox various gears, spline shaft, axle bronchitis, all kinds of small shafts, high-frequency quenching, such as various fork of the handle; metal parts heat treatment, such as a variety of gears, sprocket, all kinds of shaft, spline shaft, and marketing of high-frequency quenching treatment, etc.; machine tool industry machine bed rails of Quenching disposal.

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Engine tappet is easy distorting and cracking by using whole heating quenching in salt bath and the high temperature annealing for the pole.

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