電子萬(wàn)能試驗(yàn)機(jī)的幾種特殊材料試樣鉗口怎么處理
發(fā)布時(shí)間:2018-11-23 來(lái)源:濟(jì)南恒思盛大儀器有限公司 瀏覽:次
在電子萬(wàn)能試驗(yàn)機(jī)試樣不斷鉗口、鉗口內(nèi)、平行段或標(biāo)距外,會(huì)有幾種特殊類型的材料,與材料本身的特性及適用的環(huán)境要求。截至現(xiàn)在,解決的辦法并不多。濟(jì)南華衡試驗(yàn)設(shè)備有限公司總結(jié)了以下四種七情況:
In the sample of electronic universal testing machine, continuous jaw jaw, in parallel orgauge, there will be some special types of materials, and the properties of the material itselfand the applicable environmental requirements. As of now, the solution is not much. Jinan Huaheng Test Equipment Co., summed up the following four kinds of seven cases:
、鋼絲、鋼絞線由于試樣硬度高,內(nèi)部結(jié)構(gòu)相對(duì)松懈,在拉伸實(shí)驗(yàn)過(guò)程中受力不均勻,夾持試樣的鉗口易磨損等緣由,夾具一向未得到好的解決。以前是夾鋁箔來(lái)做,一次實(shí)驗(yàn)就需要四片鋁箔,浪費(fèi)較大?,F(xiàn)在采用了噴涂金剛砂的電子萬(wàn)能試驗(yàn)機(jī)夾具,打滑問(wèn)題已經(jīng)解決,但是斷口方位始終未能理想,10根試樣的成功率也就一半。
First, steel wire, steel strand due to high hardness, the internal structure is relatively lax,during the tensile test of uneven force, clamping jaw is easy to wear specimens and other reasons, fixture has never solved. Before is the foil to do an experiment, you need fourpieces of foil, large waste. Now the fixture universal testing machine electronic sprayingemery, slipping problem has been resolved, but the fracture azimuth has not been ideal, 10root samples is half the success rate.
第二、有關(guān)變形量大的材料因?yàn)樽冃芜^(guò)大,電子電子萬(wàn)能試驗(yàn)機(jī)所以?shī)A持困難,夾具的設(shè)計(jì)就是一個(gè)難點(diǎn),對(duì)設(shè)計(jì)人員的要求就較高了。
Second, the large amount of deformation of materials because of large deformation, the electronic universal testing machine and clamping difficult, is a difficult fixture design, the design personnel requirements higher.
第三、對(duì)需要在高溫環(huán)境下做的實(shí)驗(yàn),夾具的要求較嚴(yán)格,要耐高溫不變形和體積小,所以普通的實(shí)驗(yàn)機(jī)廠家來(lái)說(shuō),是比較難解決的,但是耗費(fèi)的資源較大。
Third, to be in the high temperature environment to do experiment, fixture requirements more stringent, must not high temperature deformation and small volume, so the machine manufacturers in general, is more difficult, but to spend resources greatly.
第四、對(duì)批量大,高頻率的實(shí)驗(yàn)來(lái)說(shuō),國(guó)外遍及采用全自動(dòng)夾持,對(duì)與國(guó)內(nèi)實(shí)驗(yàn)機(jī)廠家來(lái)說(shuō),這個(gè)問(wèn)題有待解決,需要結(jié)合國(guó)外的技術(shù)來(lái)處理。
Fourth, large quantity, high frequency experiment, foreign throughout using automaticclamping, on domestic experimental machine manufacturer, the problems to be solved,requires a combination of foreign technology to deal with.
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