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class="searchLt"><div id="22qpap8" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會</a></div><div id="3awdfmw" class="clearfix searchWrap"><div id="22yfxeg" class="searchInput"><input type="text" name="keywords" placeholder="請輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="imjm3my" class="container"><ul><li id = "index_index"><a href="http://m.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://m.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://m.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a 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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="kwol222" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776393554687/215442.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="oxuwoqc" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>硬度機質(zhì)量,硬度機</p><p><span>***更新：</span>2020-12-30 15:06:03</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="dcpmtfc" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海尚材試驗機有限公司</a></p><p><span>聯(lián)系人：</span>衛(wèi)志清</p><p><span>郵箱: </span>shangcaisy@163.com</p><p><span>電話: </span>17765160728</p><p><span>傳真: </span>021_57520236</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>021-50393010</p><p><span>地址: </span>奉城鎮(zhèn)奉旺路373號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="rlyvnp7" class="page-proshow02"><p class="title">詳細說明</p><div id="n8w9vce" class="box"><p><p> 表面熱處理分為兩大類，一類是表面淬火回火熱處理，另一類是化學熱處理，其硬度檢驗方法如下：1、表面淬火回火熱處理表面淬火，回火熱處理通常用感應(yīng)加熱或火焰加熱的方式進行。主要技術(shù)參數(shù)是表面硬度、局部硬度和有效硬化層深度。硬度檢測可采用維氏硬度計，也可采用洛氏或表面洛氏硬度計。試驗力（標尺）的選擇與有效硬化層深度和工件表面硬度有關(guān)。這里涉及到三種硬度計，硬度機質(zhì)量。維氏硬度計是測試熱處理工件表面硬度的重要手段，它可選用～100KG的試驗力，測試薄至，它的精度是高的，可分辨出熱處理工件表面硬度的微小差別。另外，有效硬化層深度也要由維氏硬度計來檢測，所以，對于進行表面熱處理加工或大量使用表面熱處理工件的單位，配備一臺維氏硬度計是有必要的。表面洛氏硬度計也是十分適于測試表面淬火工件硬度的，表面洛氏硬度計有三種標尺可以選擇?？梢詼y試有效硬化深度超過。盡管表面洛氏硬度計的精度沒有維氏硬度計高，但是作為熱處理工廠質(zhì)量管理和合格檢查的檢測手段，硬度機質(zhì)量，硬度機質(zhì)量，已經(jīng)能夠滿足要求。況且它還具有操作簡單、使用方便、價格較低，測量迅速、可直接讀取硬度值等特點，利用表面洛氏硬度計可對成批的表面熱處理工件進行快速無損的逐件檢測。硬度計本身會產(chǎn)生兩種誤差：一是其零件的變形、移動造成的誤差；二是硬度參數(shù)超出規(guī)定標準所造成的誤差。硬度機質(zhì)量</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="硬度機質(zhì)量,硬度機" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776393554687/215442.jpg"></div><p> 使目鏡內(nèi)觀察到的兩刻線相近移動。當兩刻線邊緣相近時，透光縫隙逐漸減少，當兩刻線間處于無光隙的臨界狀態(tài)時，按下[CL]鍵清零。(15)轉(zhuǎn)動左側(cè)鼓輪使鼓輪左邊刻線對準壓痕一角，再轉(zhuǎn)動右側(cè)鼓輪，兩刻線分離，使右側(cè)刻線對準壓痕另一角。當刻線對準壓痕對角線無誤時，就按下測微目鏡下方的按鈕輸入，并在顯示屏的D1后顯示。(16)當右側(cè)鼓輪轉(zhuǎn)動時，LCD屏上D1后的數(shù)字閃爍，表示結(jié)果還未輸入，當結(jié)果輸入后就不再閃爍，光標轉(zhuǎn)入D2。按上述要求，再次測定另一對角線長度。此時LCD屏HV硬度值就同時顯示。注:壓痕會由于樣品的表面粗糙不平或平整度差異或多或少地發(fā)生變形，所以測量對角線應(yīng)在兩個垂直方向上進行，取其算術(shù)平均值。(當進行努氏硬度試驗時，只需測試長對角線長度，HK硬度值就立即顯示。)(17)本次測量完成后，才能進行下一次試驗。如果本次測量結(jié)果不滿意，可重復進行測量或按[SPECI]、[RESET]復位鍵重新進行試驗。(此時測微目鏡刻線需重新對零)(18)當LCD屏顯示測量次數(shù)N≥1時，可按[SPECI]、[PRI]打印鍵，測試結(jié)果從打印機(24)中打印輸出。***次試驗結(jié)果(N=O)不予打印。(19)當在目鏡中觀察到壓痕太小或太大影響測量時，需重新選擇試驗力，轉(zhuǎn)動試驗力變換手輪。品質(zhì)硬度機質(zhì)量硬度計調(diào)整后，開始測量硬度時，***個測試點不用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="硬度機質(zhì)量,硬度機" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776447050781/8314610.jpg"></div><p> 1、45——優(yōu)質(zhì)碳素結(jié)構(gòu)鋼，是**常用中碳調(diào)質(zhì)鋼。首要特征:**常用中碳調(diào)質(zhì)鋼，歸納力學功能杰出，淬透性低，水淬時易生裂紋。小型件宜選用調(diào)質(zhì)處理，大型件宜選用正火處理。運用舉例:首要用于制作強度高的運動件，如透平機葉輪、壓縮機活塞。軸、齒輪、齒條、蝸桿等。焊接件留意焊前預熱，焊后消除應(yīng)力退火。2、Q235A（A3鋼）——**常用的碳素結(jié)構(gòu)鋼。首要特征:具有高的塑性、耐性和焊接功能、冷沖壓功能，以及必定的強度、好的冷彎功能。運用舉例:***用于一般要求的零件和焊接結(jié)構(gòu)。如受力不大的拉桿、連桿、銷、軸、螺釘、螺母、套圈、支架、機座、建筑結(jié)構(gòu)、橋梁等。3、40Cr——運用*****的鋼種之一，屬合金結(jié)構(gòu)鋼。首要特征:經(jīng)調(diào)質(zhì)處理后，具有杰出的歸納力學功能、低溫沖擊韌度及低的缺口敏感性，淬透性杰出，油冷時可得到較高的疲勞強度，水冷時雜亂形狀的零件易發(fā)生裂紋，冷彎塑性中等，回火或調(diào)質(zhì)后切削加工性好，但焊接性欠好，易發(fā)生裂紋，焊前應(yīng)預熱到100～150℃，一般在調(diào)質(zhì)狀況下運用，還能夠進行碳氮共滲和高頻外表淬火處理。運用舉例:調(diào)質(zhì)處理后用于制作中速、中載的零件，如機床齒輪、軸、蝸桿、花鍵軸、頂針套等。</p><p> 維氏硬度計原理應(yīng)用以及優(yōu)缺點維氏硬度計（GB/—1999）相關(guān)硬度計介紹:HV-5型數(shù)顯小負荷維氏硬度計維氏硬度計原理采用正四棱錐體金剛石壓頭，在試驗力作用下壓入試樣表面，保持規(guī)定時間后，卸除試驗力，測量試樣表面壓痕對角線長度。試驗力除以壓痕表面積的商就是維氏硬度值。維氏硬度值按式（３－１）計算：HV=常數(shù)×試驗力/壓痕表面積≈F／d2…………（3－1）式中：HV————維氏硬度符號；F――――試驗力，N；d————壓痕兩對角線d1、d2的算術(shù)平均值，mm實用中是根據(jù)對角線長度d通過查表得到維氏硬度值。國家標準規(guī)定維氏硬度壓痕對角線長度范圍為～維氏硬度的表示方法維氏硬度表示為HV，維氏硬度符號HV前面的數(shù)值為硬度值，后面為試驗力值。標準的試驗保持時間為10～15S。如果選用的時間超出這一范圍，在力值后面還要注上保持時間。例如：600HV30—表示采用（30kg）的試驗力，保持時間10～15S時得到的硬度值為600。600HV30/20—表示采用（30kg）的試驗力，保持時間20S時得到的硬度值為600。維氏硬度試驗的分類和試驗力選擇維氏硬度試驗按試驗力大小的不同，細分為三種試驗，即：維氏硬度試驗、小負荷維氏硬度試驗和顯微維氏硬度試驗。觸屏技術(shù)可更簡單、更經(jīng)濟地實現(xiàn)檢驗過程的記錄、顯示、控制和數(shù)據(jù)的存儲。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="硬度機質(zhì)量,硬度機" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776514687500/5677335.jpg"></div><p> 但硬度和拉伸試驗不應(yīng)同時進行。2）對于SP（平整冷軋）狀態(tài)，與鍍層精整（PL）或鏡面光潔度（MF），或以“無拉伸痕”交貨的鋼材組合，***硬度可以提高5個HV或抗拉強度可以提高20MPa。3）牌號CS2、CS3和CS4的硬度值*適用于沸騰鋼。如上所述，冷軋板的力學性能可以通過拉伸試驗來檢測，也可以通過硬度試驗來檢測。由于硬度試驗設(shè)備簡單、易于掌握，試驗效率高，并且金屬硬度與強度之間有一定的對應(yīng)關(guān)系，所以硬度檢測是確定材料力學性能更方便的方法。冷軋板的硬度檢測可以用于冷軋薄板生產(chǎn)過程的質(zhì)量控制，更適于生產(chǎn)沖壓產(chǎn)品的廠家對冷軋板原材料進行力學性能的復檢。日本工業(yè)標準JISG3141-1996規(guī)定的硬度試驗是洛氏硬度HRB和維氏硬度HV。維氏硬度試驗用于冷軋薄板毫無問題。洛氏硬度HRB卻不適用于測試冷軋薄板材料。因為當板材厚度小于2mm時，測試HRB硬度可能會因為發(fā)生“測砧效應(yīng)”而使測試的硬度值失準。對于薄的冷軋板材料，可以測試表面洛氏硬度HRT，然后換算成HRB或HV硬度。一般規(guī)定標準塊自標定日起一年內(nèi)有效。邵氏硬度機操作方法</p><p style="text-indent:25px">HRA：是采用60kg載荷和鉆石錐壓入器求得的硬度，用于硬度極高的材料（如硬質(zhì)合金等）。硬度機質(zhì)量</p><p> 原于能工業(yè)用設(shè)備8、Cr12——常用的冷作模具鋼（美國鋼號D3，日本鋼號SKD1)特性和運用:Cr12鋼是一種運用***的冷作模具鋼，屬高碳高鉻類型的萊氏體鋼。該鋼具有較好的淬透性和杰出的耐磨性；由于Cr12鋼碳含量高達，所以沖擊韌度較差、易脆裂，并且容易形成不均勻的共晶碳化物；Cr12鋼由于具有杰出的耐磨性，多用于制作受沖擊負荷較小的要求高耐磨的冷沖模、沖頭、下料模、冷鐓模、冷揉捏模的沖頭和凹模、鉆套、量規(guī)、拉絲模、壓印模、搓絲板、拉深模以及粉末冶金用冷壓模等9、DC53——常用的日本進口冷作模具鋼特性和運用:**耐性冷作模具鋼，日本大同特殊鋼（株）廠家鋼號。高溫回火后具有高硬度、高耐性，線切割性杰出。用于精細冷沖壓模、拉伸模、搓絲模、冷沖裁模、沖頭號10、SM45——一般碳素塑料模具鋼（日本鋼號S45C）10、DCCr12MoV——耐磨鉻鋼國產(chǎn).較Cr12鋼含碳量低,且加入了Mo和V,碳化物不均勻有所改進,MO能減輕碳化物偏析并進步淬透性,V能細化晶粒添加耐性.此鋼有高淬透性,截面在400mm以下能夠徹底淬透,在300~400℃仍可堅持杰出的硬度和耐磨性,較Cr12有高的耐性,淬火時體積改變小,又有高的耐磨性和杰出的歸納機械功能.所以能夠制作截面大,形狀雜亂。硬度機質(zhì)量</p><p> 上海尚材試驗機有限公司是專業(yè)生產(chǎn)各種類型金屬、非金屬材料硬度計的公司，是ISO9001-2015國際質(zhì)量體系認證企業(yè)，是上海市****，是全國鋼標準化技術(shù)委員會力學分會委員單位之一，并參與了洛氏、布氏和維氏硬度試驗國家標準的修編。公司主要開發(fā)布氏、洛氏、顯微、維氏硬度計，共有30多個品種，產(chǎn)品質(zhì)量穩(wěn)定、功能完善，****各地并出口歐美、中東、亞洲、非洲、澳洲等國際市場，深受國內(nèi)外商客青睞。 </p> <p> 公司擁有十數(shù)年穩(wěn)定研發(fā)團隊，業(yè)內(nèi)專業(yè)顧問團隊。20畝生產(chǎn)基地，5棟標準工業(yè)廠房，坐擁長三角地理優(yōu)勢，堅持5S管理多年。擁有完備的機加工車間，CNC、數(shù)控機床等各類加工設(shè)備逾50臺，專業(yè)技術(shù)工人近80人，制造時間和品質(zhì)掌控在手。公司高度關(guān)注“技術(shù)創(chuàng)新、市場營銷、生產(chǎn)管理、企業(yè)文化”四大領(lǐng)域，將不斷推行“標準化、科學化、精細化”的現(xiàn)代管理方式，目標將自身打造成“高品位、高效率、高質(zhì)量、優(yōu)服務(wù)”的現(xiàn)代先進制造企業(yè)。 </p> <p> 在“中國制造2025”強國戰(zhàn)略**下，我們立志為自己在世界硬度計行業(yè)占據(jù)一席之地盡全部力量；為振興中國民營制造業(yè)，詮釋“MADE IN CHINA”新概念盡到自己綿薄之力！ </p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2631410.html</p></div></div></div></div></div><div id="7lhzgiu" class="page-right twoColRt"><div id="ipg3gdp" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="g2g9ase" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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