Discuz! Board

 找回密码
 立即注册
搜索
热搜: 活动 交友 discuz
查看: 5|回复: 0

Mig welding tips??

[复制链接]

9万

主题

9万

帖子

29万

积分

论坛元老

Rank: 8Rank: 8

积分
293221
发表于 2021-8-31 23:52:38 | 显示全部楼层 |阅读模式
Well today in lab we started mig welding for the first time this year Im happy..I know how to weld already but i don't know if the beads im putting down are correct and if my settings are about right..Also technique...The power source we weld from is a miller xmt 350 with all 3 processes..I believe i have my machine set at about 19volts,wire speed is 300 ipm i believe and the gas mix is 75% argon and 25% c02 set at approx. 35psi...Welding on 1/4in metal coupons..Right now im running solid wire..I believe the # from the wire is ER70S6 and it's .035 wire..What type of technique should i be doing?Should i just be pushing it left to right (im right handed), and should it just be a straight or should there be a whip..And if theres suppose to be a whip, how?Please and thanks..Also i hold the gun @ approx. 30 degree angle when im welding..edit:Sorry if this is in thet wrong section X_X
Reply:thats weird because at warren central high school in indiana we did literally the same exact thing except i used 19.6 volts and about 230 wire speed (on a miller machine that in between the 2 and 2.5)
Reply:also you know that you have a good weld when the weld sounds like a loud bacon popping sound and also the wire should not be touching the base metal if so lower the wire speed your using the correct voltage however i just started mig so im not that exsperienced
Reply:So first things first it's not 35psi lol..Its 35 CFH (cubic feet an hour)..Second, i did awesome today..Got my machine running pretty good and im pretty sure i found the best settings..For me atleast..Machine set at about 19 volts and the wire speed maybe a quarter turn up from the setting 3..So say maybe 250 ipm?..
Reply:you could try higher volts to get the bead to lay a little flatter if you want.  at school im running 20.5v 290ipm for flat and horizontal.  we are running the same wire, but with 85/15 gasand if your finding the feed rate a little fast you can turn it down a little, but i woudlnt go slower than 260ishyou can push or pull, but pulling will get you more penatration, so if these coupons are for bend tests thats the way i would do it.
Reply:Ya today at school i got a little better..Had it up to about 19.5volts and about 250..On monday when we go back i think im gonna bump it up to about 20v and 275ipms..And right now im going left to right..(right handed)..We went over pushing and pulling today but it's Friday and i wasn't really paying attention. also started to do a cursive e type whip..instead of just a straight whip..
Reply:your pulling from the sounds of it. as for a whip, you dont really need to.  for your root pass just wiggle it a little to help it lay flat,but not to much cause you need the penatration on your root, and then just walk the puddle where you want it.
Reply:At first, a straight line--- steady motion is good. Keep the toes laser straight on both sides, slight crown. Close arc gap 3/16"~even and consistant. Don't forget to breath.Lead the puddle!City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:yeah the thirs day of mig for me was today i didnt really like it but then my teacher showed me that if you whip and pause a little it would look so much better and within ten minutes of practice i had a stack of dimes as i call it
Reply:Thanks for the tips everyone =)
回复

使用道具 举报

您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

Archiver|小黑屋|DiscuzX

GMT+8, 2025-12-24 10:52 , Processed in 0.181864 second(s), 21 queries .

Powered by Discuz! X3.4

Copyright © 2001-2021, Tencent Cloud.

快速回复 返回顶部 返回列表