metal hardness 中文意思是什麼

metal hardness 解釋
金屬硬度
  • metal : n 1 金屬；金屬製品；金屬合金。2 【化學】金屬元素；（opp alloy）；金屬性。3 【徽章】金色；銀色。4 ...
  • hardness : n. 1. 堅固。2. 冷酷無情。3. 苛刻。4. 困難。5. 硬性；硬度。6. 飛彈基地防禦核攻擊的能力。
  1. The quality of furan sand castings is usually better than clay sand castings, however, some defects are also very easy take place with furan sand castings such as blow hole, metal penetration, veining, cracking, slag inclusion, hardness too low, surface recarburation, surface sulphuration, nodularity degeneration etc, which were usually caused by improper raw materials selection, improper method design, incorrect moulding or / and core - making

    摘要呋喃樹脂砂鑄件質量一般比黏土砂鑄件好，但如果原材料選擇、工藝設計、造型和制芯操作不當，也會產生氣孔、粘砂、脈紋、裂紋，夾渣、硬度不足、滲碳、滲硫和球化不良等鑄造缺陷。
  2. Study on the relationship between the melting point the hardness of the alkaline earth metal oxide and the electron structure

    堿土金屬氧化物熔點和硬度變化規律與電子結構的關系
  3. Examination of the density, strength, hardness and microstructure showed that the mechanical properties and structure of the part made by direct metal forming process are better than that obtained from selective laser sintering process, as good as or even better than castings

    對成形件進行的密度、強度和硬度指標測試和金相組織觀察表明：基於弧焊的直接金屬成形件的組織結構和力學性能指標明顯優于選擇性激光燒結工藝成形件，達到或高於鑄造零件。
  4. Hard alloy die is made y taking high - quality hard alloy as its nips and fastening with steel die case. it is characterized by high hardness, good thermal conductivity, brasive coefficient and strong resistant to corrosion. it is suitable for drawn metal wire, bar and pipes. the types of dies includes rectangle, hecagon, octagon, diamond, trapezoid, basin and knob, u - shaped and half round types

    硬質合金模具採用優質合金作模芯，並用鋼質模套緊固，具有硬度高，導熱性能好，磨擦系數小，抗腐蝕性等特點，適用於拉制金屬線材，棒材，管材等，另外，模具的類型有矩型、六角型、八角型、菱型、梯型、凹型凸型、馬蹄型、半圓型等各種異形模。
  5. The factory s electroplating products has : quality assurance, high wear resistance, hardness, acid, alkali inside, in the above - tolerance mold repair complex, complicated shape blind hole, uniform coating, extrusion sheet metal plating and maintenance characteristic. it is get the clients praise trust and praise

    本廠電鍍加工產品特點：質量保證高耐磨硬度高內酸內堿，可以在模具上面超差修復，盲孔形狀復雜鍍層均勻，擠出板材等鍍硬鉻，深受全國各地客戶的信賴和好評，
  6. Conversion of hardness and strength for ferrous metal

    黑色金屬硬度及強度換算值
  7. Covered electrodes for manual metal arc welding - procedure for the deposition of weld metal - hardness tests

    手工電弧焊用塗劑焊條.焊接金屬沉積方法.硬度試驗
  8. Verification regulation of metal vickers hardness tester

    金屬維氏硬度計檢定規程
  9. The effect of heat treatment on structure and hardness of high alloy iron - based hardfacing layer metal was studied and the result obtained is of guiding significance for it ' s application

    摘要研究了熱處理對高合金鐵基堆焊層組織和硬度的影響，所得結果對其應用有一定的指導意義。
  10. Method of hardness test for deposited metal

    熔敷金屬的硬度試驗方法
  11. According to these, the paper put forward some countermeasures : select low carbon steel or low metal alloy steel with lower intensity, like 20r steel ; while welding, adopt strict craft measures with lower welding heat to input ; after jointing, proceed the whole hot dissolving on time ; control each welding joint with hardness hb 185 ; add 0. 25 % water into the liquid ammonia as decay eclipse ; enhance checking in operation, repairing equipment in time through regular interior and exterior checking

    針對上述原因提出了防止氨冷器類臨氨壓力容器產生應力腐蝕裂紋的對策：選用強度稍低，但抗裂性較好的低碳鋼和低合金鋼，如用20r鋼製造；焊接時應採用嚴格的工藝措施和較低的焊接熱輸入量；焊后應及時進行整體消除應力熱處理；控制焊接接頭各區硬度hb 185 ；在液氨中添加0 . 25 %的水作為緩蝕劑；在運行中加強檢查，及時進行停車檢修時的內外部檢查和定期檢驗。
  12. The result shows that tempered martensite has apparent lath character when temper is between 740 ~ 780, and the hardness of welded joint is 264 ~ 237hv, which can get better performance of the welded joint the lath character of martensite in welded joint disappears, and the carbide in the tempered sorbite of the base metal will aggregate when temper temperature is above 780, and the hardness and plastic property will reduce obviously

    結果表明，在740 ~ 780之間回火，焊縫硬度為264 ~ 237hv ，回火馬氏體板條特徵明顯，可以獲得優良的焊接接頭性能；回火溫度超過780 ，焊縫板條馬氏體特徵消失，母材回火索氏體中碳化物產生偏聚，硬度、塑性明顯降低。
  13. Powder metallurgy. sintered metal materials, excluding hardmetals. determination of hardness. part 3 : sintered products hardened on a surface by other treatments than in nf a 95 - 321 - 2

    粉末冶金.硬質合金除外的燒結金屬材料.硬度的測定.第3部分:除在nfa 95 321 - 2中表面硬化處理以外的燒結產品
  14. Testing of filler metals by means of weld metal specimens ; test piece for determining the hardness for surfacing

    用焊縫金屬試樣進行焊條檢驗測定堆焊硬度的試樣
  15. By adopting unique technique, we mount metal outside the special ceramic liner so that the ceramic liner for mud pump can take the advantages of special ceramics, including high hardness, good anti - wear ability and small coefficient of thermal expansion

    缸套是泥漿泵的主要易損件，由於工作條件十分惡劣，金屬缸套不耐腐蝕，使用壽命短，在地層復雜的條件下鉆井時，常因更換缸套而影響鉆井效率，此項工作勞動強度大。
  16. Sintered metal friction materials - determination of apparent hardness

    燒結金屬摩擦材料表觀硬度的測定
  17. Special metal material and products, such as high - hardness steel plate, copper - coated steel wire, copper - coated aluminum wire, bi - sn alloy, al - ti alloy, w - mo alloy, w - cu alloy, br - cu alloy etc

    特殊金屬材料，包括超硬耐磨鋼板、銅包鋼線材、銅包鋁線材，及針對特殊用途的合金材料和製品，如鉍錫合金、鋁鈦合金、鎢鉬合金、鎢銅合金、鈹銅等。
  18. It is these particles that can change nitriding layer microstructure and that accelerates the layer formation. nitrogen is infiltrated through the surface of metals and it changes the chemical components. as a result, the surface of metal has good performance with high hardness, high resistant attrition, high fatigue strength, high resistant erode and resistant die burn

    這些高能粒子可以改變滲層組織，結構和促進化學反應過程，加速滲層形成，使氮元素滲入金屬表面，從而改變金屬表面的化學成分，使之具有高硬度、高耐磨性、高疲勞強度、高腐蝕能力及抗燒傷性。
  19. The increase in hardness and strength of a ductile metal as it is plastically deformed below its recrystallization temperature

    塑性材料于再結晶溫度以下進行塑性變形引起的硬度和強度升高現象。
  20. Cbn230 yellow mono - crystal, transparent, regular shape, high toughness and hardness. suitable for electroplated ， vitrified and metal bond tools, wheels etc. the tools have long service life

    Cbn230金黃色立方氮化硼單晶，等積形透明晶體，高韌性，高強度。適用於電鍍、陶瓷、金屬結合劑體系磨具、砂輪、工具製造。其製品使用壽命長。
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