Gwneuthurwr a Chyflenwr Sgriw Pren Hir Steil Newydd Tsieina 2019 Ruiye

Sgriw Pren Hir Hex Steil Newydd 2019

Disgrifiad Byr:

Deunydd: dur carbon Q195, Q235 / dur gwrthstaen

Maint: M6 M8 M10 M12 M16…

Hyd: 25mm-160mm…

Gorffeniad wyneb: galfanedig


Manylion y Cynnyrch

Tagiau Cynnyrch

We're convinced that with joint endeavours, the business between us will bring us mutual benefits. We are able to guarantee you products high quality and competitive value for 2019 New Style Hex Sgriw Pren Hir , Rydym yn chwarae rhan flaenllaw wrth ddod â darparwr gwych a thaliadau ymosodol i gleientiaid gyda nwyddau o ansawdd da.
We're convinced that with joint endeavours, the business between us will bring us mutual benefits. We are able to guarantee you products high quality and competitive value for Sgriw Pren Hex Head ,Sgriw Pren Hir ,Sgriw Pren , Customer satisfaction is our goal. We've been looking forward to cooperating with you and providing our best services to suit your needs. We warmly welcome you to contact us and you should feel free to contact us. Browse our online showroom to see what we can do for you personally. And then E-mail us your specifications or inquiries today.
Sgriw:

Mae sgriw yn fath o glymwr, mewn rhai ffyrdd yn debyg i follt, wedi'i wneud yn nodweddiadol o fetel, ac wedi'i nodweddu gan grib helical, a elwir yn  edau wrywaidd  (edau allanol). Defnyddir sgriwiau i gau deunyddiau trwy gloddio i mewn a lletemu i mewn i ddeunydd wrth eu troi, tra bod yr edau yn torri rhigolau yn y deunydd wedi'i glymu a allai helpu i dynnu deunyddiau wedi'u cau at ei gilydd ac atal tynnu allan. Mae yna lawer o sgriwiau ar gyfer amrywiaeth o ddefnyddiau; mae'r rhai sy'n cael eu cau'n gyffredin gan sgriwiau yn cynnwys pren, metel dalennau a phlastig.

Fel rheol bydd gan sgriw  ben  ar un pen sy'n cynnwys siâp wedi'i ffurfio'n arbennig sy'n caniatáu iddo gael ei droi, neu ei  yrru , gydag offeryn. Ymhlith yr offer cyffredin ar gyfer gyrru sgriwiau mae sgriwdreifers a wrenches. Mae'r pen fel arfer yn fwy na chorff y sgriw, sy'n cadw'r sgriw rhag cael ei yrru'n ddyfnach na hyd y sgriw ac i ddarparu  arwyneb dwyn

Sgriw pren:

Gwnaed sgriwiau pren cynnar â llaw, gyda chyfres o ffeiliau, cynion, ac offer torri eraill, a gellir gweld y rhain yn hawdd trwy nodi bylchau afreolaidd a siâp yr edafedd, ynghyd â marciau ffeil sy'n weddill ar ben y sgriw. ac yn yr ardal rhwng edafedd. Roedd diwedd di-flewyn-ar-dafod i lawer o'r sgriwiau hyn, heb y pwynt taprog miniog ar bron pob sgriw bren fodern. Yn y pen draw, defnyddiwyd turnau i gynhyrchu sgriwiau pren, gyda'r patent cynharaf yn cael ei gofnodi ym 1760 yn Lloegr. Yn ystod y 1850au datblygwyd offer newid i ddarparu edau fwy unffurf a chyson. Mae gan sgriwiau a wneir gyda'r offer hyn ddyffrynnoedd crwn gydag edafedd miniog a garw. Gwnaed rhai sgriwiau pren gyda thorri marw mor gynnar â diwedd y 1700au (hyd yn oed cyn 1678 o bosibl pan gyhoeddwyd cynnwys y llyfr gyntaf mewn rhannau).

Ar ôl i beiriannau troi sgriwiau gael eu defnyddio'n gyffredin, cynhyrchwyd y mwyafrif o sgriwiau pren sydd ar gael yn fasnachol gyda'r dull hwn. Mae'r sgriwiau pren wedi'u torri hyn yn ddieithriad bron yn ddieithriad, a hyd yn oed pan nad yw'r shank taprog yn amlwg, gellir eu dirnad oherwydd nad yw'r edafedd yn ymestyn heibio i ddiamedr y shank. Mae'n well gosod sgriwiau o'r fath ar ôl drilio twll peilot gyda darn dril taprog. Mae'r mwyafrif o sgriwiau pren modern, ac eithrio'r rhai sydd wedi'u gwneud o bres, yn cael eu ffurfio ar beiriannau rholio edau. Mae gan y sgriwiau hyn ddiamedr cyson, edafedd â diamedr mwy na'r shank, ac maent yn gryfach oherwydd nad yw'r broses rolio yn torri grawn y metel.


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