hardening n. 1.硬化;【冶金】淬火。 2.硬化劑。 air hardening 氣冷硬化。 case hardening 表面硬化。 hardening by cooling 冷卻硬化。 hardening by hammering 錘擊硬化。 hardening process 硬化法。 the hardening of arteries 動脈硬化。 hardening through 【機械工程】淬透。
Gear flame or induction hardening process and its quality control 齒輪火焰及感應(yīng)淬火工藝及其質(zhì)量控制
Methods of measuring case depth for steel hardened by flame or induction hardening process 鋼的火焰加熱淬火或感應(yīng)加熱淬火硬化層深度的測量方法
Numerical simulation of 3 - d transient temperature field during continuous yag laser transformation hardening process 激光相變硬化三維瞬態(tài)溫度場數(shù)值模擬
The non destructive testing ( ndt ) system is primarily a poke yoke device for the induction hardening process 非破壞性試驗系統(tǒng)的主體是一個裝有軛形沖擊線圈用來感應(yīng)淬火的裝置
The machine equips with big - digmeter screw . that is made by the special hardening process , which posses not only good corrosion resistance and abrasion resistance but also high layout , lower coast of power , and better plastify 帶有屏蔽混練段的大直徑螺桿,經(jīng)特殊硬化處理不僅有良好的耐腐蝕性和耐磨性,而且具有高產(chǎn)出、低能耗,塑化好等優(yōu)點。
Based on above , the characteristics of hydration hardening process and microstructure of hsc as well as the interfacial layer between cement paste and coarse aggregate are investigated under low water cement ratio , high content superplasticiser and with one kind or more than one kind of mineral materials condition , the reaction mechanisms of different mineral materials are also discussed 研究了不同水膠比、復(fù)合緩凝成分高效減水劑及礦物摻合料的摻加方式、摻量對高強混凝土水泥漿體水化放熱過程和水泥漿體的水化熱、水化放熱速率以及最高溫升的影響規(guī)律。探明了高強混凝土中水泥漿體的水化硬化過程、礦物摻合料之間的相互作用機理。
When this machine is used for the hardening processing of teeth , teeth will be embrittlement and snap due to its deeper depth of hardening . for this reason , we spend a lot of money to import the impulse hardened machine which can harden the depth 0 . 1mm 0 . 04 " of surface and make the hardness to be more than hrc67 hv900 本公司自行研發(fā)的鋸研磨機,以高科技的cbn鉆石砂輪直接研磨出鋸形狀form grind ,并由電腦控制精密度,以制造高精密零件的技術(shù),將鋸高度差控制在0 . 004 " 0 . 1mm之間,使鋸切線不會歪斜。
The research results on laser hardening of the fibre - cutting roller showed that using laser surface hardening process instead of thermal spraying to strengthen the surface of fibre - cutting roller of 4crl 3 stainless steel is practicable . not only this technique overcame the disadvantage of larger heat distortion by using thermal spraying but also possessed the advantages that the operation is simply and that expense is easy 過絲輥激光表面淬火的研究表明,選取恰當(dāng)?shù)墓に噮?shù)對過絲輥表面采用激光淬火替代傳統(tǒng)的熱噴涂是切實可行的,該方法不但能夠克服熱噴涂方法中工件變形大的不足,而且工藝簡便、成本低廉,實用性強,具有明顯的經(jīng)濟效益和推廣應(yīng)用價值。
Through strength tests and xrd tests for cemented stone , the paper presents action mechanism of the nanometer materials in the cement hydration and hardening process : pozzolanic effect , filling effect , acceleration action for the cement hydration , and improving action for microstructure . from the four aspects , the modified mechanism of the nanometer silica fume and ordinary silica fume in cement paste are compared . the analysis results show that the particular properties of the nanometer silica fume include particle fineness , crystal structure and surface hydroxy , etc . a serial of laboratory tests are performed to study physical and mechanic properties of the clay with the addition of the nanometer silica fume 結(jié)合水泥石強度試驗和xrd試驗,從火山灰效應(yīng)、填充效應(yīng)、水泥水化促進(jìn)作用和微結(jié)構(gòu)改善作用等方面探討了三種納米礦粉在水泥水化硬化過程中的作用機理;從這四個方面出發(fā),對比分析了納米硅粉和普通硅粉作用機理的異同點,分析表明,納米硅粉的優(yōu)異特性主要表現(xiàn)為顆粒細(xì)度、晶體結(jié)構(gòu)、表面羥基等特性。
Abstract : in this paper , the laser transformation hardening ( lth ) system which used for die and mould and laser processing methods are introduced . the relationship between depth of hardening layer , wear resistance properties and laser hardening processing parameters are dicussed . the results show that die ' s service life can be improved by using lth technology 文摘:介紹了用于模具表面的激光強化加工系統(tǒng)和激光強化工藝方法,討論了激光強化模具表面的硬化層深度和耐磨性能與激光強化工藝參數(shù)之間的關(guān)系,采用激光強化技術(shù)能大幅度提高模具的使用壽命。