Iyo mechanical properties yesimbi inoreva maitiro esimbi pasi pesimba rekunze, kunyanya kusanganisira zviratidzo zvinotevera.
① Ultimate Simbaσb: iyo yakanyanya kushushikana pfungwa pane tensile stress-strain curve, unit
Iye MPa.
② Muganho weGohoσs: kana iyo tensile kushushikana kwechinhu ichipfuura iyo elastic renji uye deformation yepurasitiki inotanga kuitika Stress.Iko hakuna pachena goho rendefa mune tensile stress-strain curve yezvimwe zvinhu, ndiko kuti, goho rayo harigone kutsanangurwa zvakajeka Points.Muchiitiko ichi, zvinotsanangurwa muinjiniya kuti kukosha kwekushushikana kwe0.2% kusara deformation yemuenzaniso inotorwa semuganho wegoho.σ0.2 inoratidzwa muMPa.
③ Endurance Limit: inokambaira kuputsika kwemuenzaniso mushure meimwe nguva pane imwe tembiricha
Avhareji yekushushikana pa crack.Muinjiniya, inowanzo ratidzwa neavhareji yekushushikana kukosha kwemuenzaniso kana ichityora yegumi5h pane tembiricha yekugadzira Iyo bit is MPa.
④ Creep Limit: ita kuti sampuli ibudise imwe huwandu hweKushushikana kukosha kwekukwira.Iyo yekushushikana kukosha tafura yesimbi pane dhizaini tembiricha ye105h uye creep rate ye1% inowanzo shandiswa muinjiniya Iri muMPa.
⑤ Percentage Elongationδ8: inoratidza kuti kana sampuli yakuvadzwa muyedzo yekutsiga Mazana epurasitiki elongation.Indekisi yekuyera purasitiki yesimbi.Hurefu hwepakutanga hwemuenzaniso hunowanzosarudzwa sehurefu hwakarurama hwemuenzaniso
5 nguva kana 10 nguva dhayamita, saka sampuli ine δ5uye δ10, mu%.
⑥ Kuderedzwa kweNzvimboψ: inoratidza kuti kana sampu yakakuvadzwa muyedzo yekunetsa
Raw plastiki deformation rate.Icho chimwe chiratidzo chekuyera plastiki yezvinhu, inoratidzwa mu%.
⑦ Impact Value Ak: Icho chiyero chekuoma kwesimbi uye chinotarisa kana simbi ine brittle kutadza Indicator, unit: J.
⑧ Kuoma: kunoratidza kuramba kwezvinhu kune deformation yepurasitiki yemunharaunda uye kupfeka kuramba kwezvinhu.Kune marudzi matatu ematafura ekuomarara Anoratidza nzira, kureva Brinell kuomarara HB, Rockwell kuomarara HR uye Vickers Vickers Diamond Hardness HV ine nzira dzekuyeresa dzakasiyana uye maapplication range.Maererano neruzivo Pane hukama hwepedyo pakati pekuoma uye kusimba kwesimba sezvinotevera: yakakungurutswa uye yakajairika yakaderera kabhoni simbi.σb=0.36HB;Yakakungurutswa uye yakajairika yepakati kabhoni Simbi kana yakaderera alloy simbiσb=0.35HB;Hukukutu ndeye 250 ～ 400HB, uye iyo inopisa-yakagadziriswa alloy simbi.σb=0.33HB.
Nekuda kwekureruka kwekuyerwa, kuoma kwenzvimbo inobatwa nekupisa kunowanzoshandiswa kuona dhigirii rekuomarara kwemajoini akasungwa.
–本文内容摘抄自《压力管道设计及工程实例》
Nguva yekutumira: Feb-07-2023