tandaoxihan，dahuodi1 yinxianghenyoukenengyeshineirangrenjuedeweikongbizhibusideyanjingbushufudehuguang。shijixihanzaishiyeyanfazhongyoudeshizhonghenshuxideyingzaogongyishebeinengli，taguangfanxingyingyonglingyuzaishuilijijie、shiyousuoyousuoyou、yunshuchuanzhiyingzaodedengduofangmianchanye。zaizhongdawoshichucunguanshuilijichusuidaoshigong，xihanshigongzuoyeyewubifeichangzhongyao，woshichucunguandeguantiyeyoudeshizhangzhangdegangtiaozhuangpeixihanerlai。duiyuneixiezhongdawoshichucunguandexihan，niyouzhishidatigeni？

yi、hanjiefangfazuoyeqiandezuozhunbeidegongzuo

daxingguantiduijiehanjiagongqian，shibudebu zuoyouhenduozuohaozhunbeirenwude。zuixianbianxieduijiehanjiagongjishupinggu，zhishi tiqianjiaochangdeshijianlaizhunquedeyujingchudizhendefashengzaishiyanbaogaolipilaoshiyanduijiehanjiagongyangchengdeshougonghanjiezhijietouyoumeiyoufuheguiding。danshi，duijiehanjiarenwuyezhuanshutebiehuodong，dianhanjiegongyiyeshigexinghuagangwei，quanbuyaogoumaigupiaojiaosejihuijinengzhengshu，tongshihuanzaixiangmushigongqian，dianhanjiegongyibudebukeyitongguokaoshishijiandabiaohoujiunenggangqian。

er、zhuanyechucaohanjiechangjian

mohuanchuyouguandezhutixingzhuyaobaokuoguandi、guanbihefuding，yousuochayizangqicaiyongleyousuochayideshougonghanjiecelve。

1、buxiuganghansidianhufangdianxihanhan，keyishuoshigongzuobijiaopubiandediangong1shounazhubuxiuganghansi，1shounazhuxihanmianjudexihanshouduan。zhecaishizuibijiaopubiandexihanshouduan，buxiuganghansidianhufangdianxihanhandecaozuofangfashiyongjiagongheshepeidouhenjianyi。buyouxiaoxingjiaoqiang。keyiyongyuchucaoqitalianjiedexihan。de，duidiangongjiqiaopingxingxiangyaohengao。duijieguandaodianhanlashenhou，yaoqiaodiaoxihanyaopi，yigongchaduijieguandaodianhanwaiguanshejichanpinzhiliang，zheyangxihanshouduan，diangonglaodonggaizaogouzaoda，changshikecaozuofangfashiyonghuiganshoudaoyouqilei。

2、maiguhan，tadehuguangshimaizaihanjijiexialai，de，guyinerbeichengweimaiguhan，zheyizhongjiguangrongjiedefangfabuhuihuguangfushe，yizhiyubuhuidayandewenti，tongshimaiguhandachangyouzidonghan，gujiguangrongjiezhuanhualvgao。fuheyuguantidibanhebibanhuanfengdejiguangrongjie。

3、qidianlihan，qidianlihanyoudeshizhongshourejiyoujifeiqiqitibaohuhaohan，quanzidonghandeyikuan，zhizaorexiaolvyehengao，hexinyongzaizhuanyehuagongchuguanbibandezongfengdianhuxihan。suizhuqidianlihandemalitebiegao，duicibushifanyinghejuanbandedianhuxihan，gengrongyichuxiantebiedadedianhuxihanchuxianbianxing。

san、dayixiedechucaodianhanhanjiezhijiance

hanjiexiaoguodelunwenjianceliruyansexiaoguojianze，wusunyinletanshangjianze，miduhemifengxingjianze

1、gaoxianzhiliangliangdehanjiecongjinshujishenshangjiunengquedinggeyinggai，zhiyaodehanjie，jinshujishenchengyulinzhuang，waibiaoguangze、qizheng，fangsiguanlipinpingchang，zhaozhumeibushengshou，erchadehanjie，jinshujishengegedada，gaoaituaobuping，zhiyaodehanjiexudezhidingheligongzuofangshi。

2、hanjiefengdezuzhijiegoushuipingshiyongyanqingkanbulelaide，huiyongwusunyinlegeshitanshangyance。hanjiefengwusunyinlegeshijiancegongyiyouguangpuxiantanshang、chaoyinbobotanshang、cifenhuoshentouxinghetanshangdeng，guangpuxiantanshangxiangjinyujigoulideguangpuxianjiance，danjigoulishigeirenpaidianyingzi，ershuiligongchengshigeihanjiefengpaidianyingzi。geirenpaidianyingziyekeyijiancechurendegugeji、neizangshengzhiqiguandengshifouyouyoushiqing，geihanjiefengpaidianyingzinengjiancechuzuzhijiegoudeyixiequexian，rujiazha，weihantou，liefenghaita。

3、dazhongxinghuagonghuagongchuguandekanglaliduhezhenmixingjianyan，zhuyaodejiacehankoudekanglaliduhezhenmixingyaobuyaowanchengdebiaozhun，changjiantongguocaiqujinshuijianyan。zheleibijiaozhongyao，ruoshibukaohebiaozhun，huagonghuagongchuguanneideranyouhuoxuqitadechuzangyoujirongjigailvbianhuibaolu，fashengbuyiguliangdejingjisunshi。

四、熔接的威害

zhenxiangduiyuyahuhangongyilaikan，yahuhanzuoyeguanlizhongzaochengdehuguangfushenengheweixiandeshengwuxueyoujifeiqiqitiduinvxingshentideshuchudoumanda。zhenxiangduiyuqitarenrenwei，jutishuchujiuhuidayan，beiyahuhandiangudayanhou，yanpihuihenbudejing，leiliubuzhiyou、zhuoregan、weiguang。quanbulijingyouyahuhanhuguangdechangsuo，xuyaobuyouyuzaiyi，erhuiyongyanpilaikan，yuelaiyueshixiaowa，yaobuyanpihuixiangdangbushufu。