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Iezer
Symbool Fe
Indeiling euvergangsmetaal
Elementnómmer 26
Natuurlike isotope 54, 56, 57, 58
Kunsmaoteg isotope 55, 59, 60
Atoomgewiech staanderdisotoop 55,845
Smiltpunt 1811 K, 1538 °C
Kookpunt 3134 K, 2861 °C

Iezer is e zèlverwit tot gries, neet-edel, metaol wat ein vaan de meis frequinte metaole en ein vaan de meis touwgepaste eleminte in minselike constructies is. In de eerdkoors kump iezer mèt 34,6% massapercinte veur; mier es eineg aander elemint (in volumepercinte is zoerstof 't prommenints; iezer besleit dao-in 5%). In 't hielal is 't vermeujelik 't tiende elemint.

[bewirk] Historie

Roond 4000 v.Chr. is iezer vermeujelik veur 't iers gebroek, bij versjeie aw besjavinge wie de Soemeriërs en de Egyptenere. Zie gebruukde 't metaol aof en touw veur speerpunte meh veural veur decoratief eleminte, umtot 't zoe zeldsem te veende waor ('t waor in deen tied waorsjijnliker doorder es goud). In deen tied won me 't allein of veurnaomelik oet meteoriete. Vaan de twelfde tot de tiende iew veur Christus góng me euver op 't gebroek vaan iezer es gewoen metaol veur daogeliks gebroek. Zoe kump 't in de Iliaad vaan Homeros allein nog veur es betaolmiddel, meh heet 't roond 1000 veur Christus al euveral in 't Middel-Ooste 't brons vervange es matteriaol veur wèrktuge en waopene.

In Europa naom later de besjikberheid vaan tin, wat ei vijfde vaan brons oetmaak, gaw meender en mós me dao ouch op iezer euverstappe. Beter iezer verkraog me door 't in e houtskoolbed te smilte: dit hèt carbonistie en is de basis vaan 't later geetiezer, boe-aon koolstof is touwgevoog. Daomèt begós d'n iezertied. In Sjina voont me um deen tied de hoegove oet.



BW Bewise Inc. Willy Chen willy@tool-tool.com bw@tool-tool.com www.tool-tool.com skype:willy_chen_bw mobile:0937-618-190 Head &Administration Office No.13,Shiang Shang 2nd St., West Chiu Taichung,Taiwan 40356 TEL:+886 4 24710048 / FAX:+886 4 2471 4839 N.Branch 5F,No.460,Fu Shin North Rd.,Taipei,Taiwan S.Branch No.24,Sec.1,Chia Pu East Rd.,Taipao City,Chiayi Hsien,Taiwan

Welcome to BW tool world! We are an experienced tool maker specialized in cutting tools. We focus on what you need and endeavor to research the best cutter to satisfy users’ demand. Our customers involve wide range of industries, like mold & die, aerospace, electronic, machinery, ,,,etc. We are professional expert in cutting field. We would like to solve every problem from you. Please feel free to contact us, its our pleasure to serve for you. BW product including: utting toolaerospace tool .HSS Cutting toolCarbide end millsCarbide cutting toolNAS Cutting toolCarbide end millAerospace cutting toolCarbide drillHigh speed steelMilling cutterCore drillTaperd end millsMetric end millsMiniature end millsPilot reamerElectronics cutterStep drillMetal cutting sawDouble margin drillGun barrelAngle milling cutterCarbide burrsCarbide tipped cutterChamfering toolIC card engraving cutterSide cutterNAS toolDIN toolSpecial toolMetal slitting sawsShell end millsSide and face milling cuttersSide chip clearance sawsLong end millsStub roughing end millsDovetail milling cuttersCarbide slot drillsCarbide torus cuttersAngeled carbide end millsCarbide torus cuttersCarbide ball-noseed slot drillsMould cutterTool manufacturer.

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