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What is mean by pass line in cold rolling mill?
The pass line in a cold rolling mill passes through the center of the billet which is on the funace exit rollers and runs through each stand through the shear blades dividing the shear prior to the cooling bed. All of the guide equipment is aligned to the pass line.
Guideways are hardened by which hardening method?
There are several ways of hardening the ways of a machine (like a lathe). Let's jump around a bit and see what's shakin' here. You are probably familiar with what is called work hardening. If you have a coat hanger you wish to cut, but have no cutters, you can bend it back and forth to change the metallic crystal structure in a specific area. Bending it makes the crystal structure smaller, and smaller crystals are harder than large ones. The flexing of the mild steel will harden it, and then it will "flex less" and finally break there. When we "work" iron (which is a material of choice for machine housings), we harden it. Shot peening, using small shot blasted on metal parts (like the connecting rods of pistons which we "upgrade" in automotive machine shops) does the same thing on the surface of the rods. It work hardens them. If we can "work" metal, we can harden it. So how do we "beat on" a lathe bed? Glad you asked. There is an industrial process that is widely used to heat, weld or otherwise modify materials called ultrasonics. Imagine a speaker, but small, very high powered and operating at a really, really high frequency (above audible sound - ultrasound). If we can "beat on" stuff with the mechanical energy created by this device, we can ultrasonically modify it. We can harden metal with it. And by ultrasonically treating the ways of a lathe bed, we can beat the heck out of the local crystal structures, reduce the size of the crystals themselves, and thereby harden the material (after which we machine it true). Ultrasonic hardening. Done deal.
Order 32 on imagine interior designer?
First you have to make a painting you just be vreative .Then for the bed you pick the one with the long poles.for the bedspread u use ur painting.for the curtains you you go to printed fabrics you can pick anyone of those.Then under that they will have 2 line going up and down click that and put the buttim bar all the way to the right.Then for the pic with the big mat all you do is pick a family pic then you go to where it says mat at the top and u put it a little over the middle.then for the lamp u pick the biggest thing of clay.make ur lamp however u want.then u go to where it says beads at the top and u put it all the way to the right thats it i hope it helped First you have to make a painting you just be vreative .Then for the bed you pick the one with the long poles.for the bedspread u use ur painting.for the curtains you you go to printed fabrics you can pick anyone of those.Then under that they will have 2 line going up and down click that and put the buttim bar all the way to the right.Then for the pic with the big mat all you do is pick a family pic then you go to where it says mat at the top and u put it a little over the middle.then for the lamp u pick the biggest thing of clay.make ur lamp however u want.then u go to where it says beads at the top and u put it all the way to the right thats it i hope it helped
What is an MS ERW pipe?
Mild Steel ERW Pipe is very popular in India. Tube Trading Co offers Mild Steel ERW Pipes to different industries and for varied applications. All Mild Steel ERW Pipes of Tube Trading comply by the Mill Test Certificate. Robust design, wear resistance, superior finish and durable quality of the Mild Steel ERW Pipes of Tube Trading make it an ideal choice for the Oil & Gas, Petroleum, Petrochemical, Chemical, Machine Building, Automobile and much more industries. If you are looking for a bulk supplier of MS ERW pipes in India, you may contact Tube Trading. Tube Trading originates from Vadodara, India offers products pan India.
What is a textile slitter operator?
a slitter operator runs a machine that slits fabrics. A roll usually 70 in in length of fabric and maybe around 300-1200 yards is loaded onto the back of the machine. Fabric is tied off and ran through the machine around rollers, under platform, through knife setup, around and through pinch rollers in the front. Machine is set to a particular cut size with the amount of rolls, length, and heat expansion factored in. Machine is then set to a low speed to roll as it heats up. Machine is heated between 680 and 720 degrees depending on process control. If the machine heats up without being in motion, the heat bar will warp. Once machine is up to temp, now we set the beds. Beds are lined up with knives. If beds are set before machine heats up to temp, they will all have to be reset due to heat expansion. Once beds are set, we will clean all carbon off of our knives. Now, we set all controls to what developed process calls for. Usually with peel ply Ill set my top and bottom clutch (front rollers) to 20. ill set my brake at around 30+ depending on weight of roll, amount of yards, and roll's core fit (loose or tight) on brake arm. Brake should be decreased throughout. too much brake and it will pull causing stress on clutches. Not enough brake and the clutches will pull the roll too fast and you will end up with a burnout/floppy selvage/creases/shifts/telescoping. Now we will make a test cut with all the beds set, machine heated, low brake... before we do the test cut, we load up the correct amount of cuts worth of cores staggered between top and bottom clutch with two extra for the selvage (unless you have an air suction system which is great until you lose air and then you have a major burnout and loose reels, have to drop beds, or doff early... Now that he clutches are set with cores. an experienced operator would usually already have cheat marks on the air shaft for core line up. But since we are inexperienced, lets waste some fabrics and make some cuts to line up our cores... Set brake to around 15-20... raise pinch roller...set edge eye..run fabric through machine enough for edge eye to straighten roll. YPM should be set to above 25 as to not carbon up your knives.. raise the bed bar to the knives and run the cuts up through to the front. Stop First! drop bed bar. Run to front of machine...tape across the cuts to keep them together and perfectly lined up... now adjust your cores to line up with your cuts and selvage. Once you have a line up..Shoot some air in the shafts... throw some two sided tape across both top and bottom clutches over cores all the way across in one swipe for each clutch... wrap cuts over the two sided tape and press.... cut away the waste, make your cheat marks on the left hand side of each core on the shaft with a dry erase marker. NOW raise those beds and start it up.... HELPFUL INFO: spatulas, scissors, screw drivers, collar tighteners, and heat resistant gloves are your best friends...... this walkthrough is only for a performance 3in dual shaft slitter.... Cutdown, Inkers, and wide impression slitters are different but run on the same basic ideas. You may have knives of different sizes which of course would have to be calculated by your Setup technician. Some have 1 1/4 in shafts.... Cutdown slitters usually have smaller knives .125 and slit smaller rolls that were preslit on a wide roll slitter. Wide slitters have larger knives.. usually .250 per knife to calculate you setup, you need to calculate heat expansion... On your basic 70 in setup on 2 1/2 in calrod. if you are setting up for 3in cuts....depending on the variance you are allowed, to get closest to 3in we will use.... A. .250 knife B. combination of spacers C. .250 knife heat expansion would be 3.000 times 1.006 minus 3.000 which should equal .018 which needs to be calculated into your spacer setup depending on what variance you are allowed to have..... I was setting up and operating with a 1/32 of an in max and 1/64 of an inch target... spent many days looking through an optical comparator during process creation..... good luck... find another job
What is lugs earthing?
it is also same as earthing lugs,there is no differenence earthing lugs ang lugs earthings.
How many lugs does the Chevy 1500 4x4 have?
The 1500 has 6 lugs as where the 2500 has 8 lugs per wheel>
How many lugs are on 2001 Lincoln LS?
there is 5 lugs on each wheel/rim there is 20 lugs total!
How many lugs does a 2002 Cadillac Seville?
5 lugs
How do you call a small bed that can be folded and put away?
A pan used for cooking
How many lugs are on a 1998 accord?
How many lugs are on a 1998 accord?
Can 8 lug rim fit 6 lug?
is this a real question? Of corse not, one has 8 lugs and the other has 6 lugs. some 8 lugs dont fit other 8 lugs.
How many lugs are on a 1996 Chevy Tahoe Wheel?
5 Lugs if it is 2 wheel drive 6 Lugs if it is 4 wheel drive
Does Wendy wear a dress or nightgown in Peter Pan?
Wendy wears a nightgown in peter pan, because she is about to go to bed when her parents leave to go out to dinner. That's when Peter Pan comes.
How many lugs on a 09 civic?
on an 09 civc si there are 5 lugs
Do 2007 Chrysler 300c have 5 lugs or 6 lugs on the wheels?
5
Do 2002 ford explorer have 5 lugs or 6 lugs on the wheel?
5
