CAL G Posted March 7, 2013 Share Posted March 7, 2013 Here are a few pictures of the press and rolling mill I made to forge Damascus for my knives. Quote Link to comment Share on other sites More sharing options...
Timothy Miller Posted March 7, 2013 Share Posted March 7, 2013 Wow very cool! Quote Link to comment Share on other sites More sharing options...
yesteryearforge Posted March 7, 2013 Share Posted March 7, 2013 How many tons ? Quote Link to comment Share on other sites More sharing options...
gearhartironwerks Posted March 7, 2013 Share Posted March 7, 2013 Totally sweet! Thanks for the pics. Please send some of finished or wip's. john Quote Link to comment Share on other sites More sharing options...
CAL G Posted March 7, 2013 Author Share Posted March 7, 2013 How many tons ? 70,000 AT 2500 PSI It uses a 6 inch bore cylinder with a 3 inch rod Quote Link to comment Share on other sites More sharing options...
Loneforge Posted March 7, 2013 Share Posted March 7, 2013 Sweet set up.......Green here! I want what he has human nature is kicking in! Must fight jealousy!!!! Quote Link to comment Share on other sites More sharing options...
CAL G Posted March 7, 2013 Author Share Posted March 7, 2013 Totally sweet! Thanks for the pics. Please send some of finished or wip's. john John here a few pictures of some of my work. Quote Link to comment Share on other sites More sharing options...
Rich Hale Posted March 7, 2013 Share Posted March 7, 2013 Seeing your machines,,the knives fit in well,,,top notch Quote Link to comment Share on other sites More sharing options...
Loneforge Posted March 7, 2013 Share Posted March 7, 2013 Wow beautiful knives!......There goes the jealousy thing again! Quote Link to comment Share on other sites More sharing options...
iron woodrow Posted March 7, 2013 Share Posted March 7, 2013 wow. art. Quote Link to comment Share on other sites More sharing options...
Dillon Sculpture Posted March 7, 2013 Share Posted March 7, 2013 Nice rig, beautiful work. Is the rolling mill hydraulic as well? Quote Link to comment Share on other sites More sharing options...
David Gaddis Posted March 7, 2013 Share Posted March 7, 2013 How about posting a few pics of the thickness control of the rolling mill. And approx how much delivered torque is required for the rolling mill? How many inches per minute is the rolling rate too please? Carry on Quote Link to comment Share on other sites More sharing options...
HWHII Posted March 7, 2013 Share Posted March 7, 2013 Great idea! Very nice. Quote Link to comment Share on other sites More sharing options...
Aljeter Posted March 7, 2013 Share Posted March 7, 2013 That is NICE! I have thought about doing something like that, but dont know much about hydraulics. I have a parker v-pak hydraulic pump and a 50 ton press. Doesnt seem like it would be that hard to get them to working together, but like I said I dont know much about hydraulics. The roller is really impressive. Here is a pic of the pump I have. Do you think it would work for what you have done? Quote Link to comment Share on other sites More sharing options...
David Gaddis Posted March 7, 2013 Share Posted March 7, 2013 Horsepower is in a relationship with PSI and GPM together. With little HP you can still generate high PSI but at a slow GPM, increase the gpm as the PSI remains constant and HP increases. That also means Higher GPM can be had with reduced PSI, while HP remains constant. Carry on Quote Link to comment Share on other sites More sharing options...
ianinsa Posted March 7, 2013 Share Posted March 7, 2013 very slick press & mill, nice knives! Thanks for sharing! Quote Link to comment Share on other sites More sharing options...
CAL G Posted March 8, 2013 Author Share Posted March 8, 2013 How about posting a few pics of the thickness control of the rolling mill. And approx how much delivered torque is required for the rolling mill? How many inches per minute is the rolling rate too please? Carry on Dave here are the specs on the design of the rolling mill. Sorry I don't have any pictures that really show the detail of the thickness control. HERE ARE THE SPECS Hydraulic motor selected is a 104-1028 Char Lynn @1500 psi it puts out about 1500 in-lbs torque @ 5GPM that motor turns about 39 RPM, this information is from their specifications The pump delivers 5 GPM 5 GPM @ 1500 psi = 5 x 1500 /1714/.85 = 5.12 HP My electric motor on the power unit is a 5 HP The roll diameter is 3 inches, therefore the circumference is 3.14x 3 = 9.42 inches / revolution @39 RPM the roll velocity would be 39 x 9.42 /60 = 6.123 inches per second The drive reduction on the sprockets is 38 teeth/15 teeth = 2.53:1 so the mill velocity is 6.123/ 2.53 = 2.42 inches/ second The force the roll moves the steel through the mill is: Motor torque x the reduction divided by the roll radius = 5000 x 2.53 / 1.5 = 8433 pounds Quote Link to comment Share on other sites More sharing options...
David Gaddis Posted March 8, 2013 Share Posted March 8, 2013 That is great info for all of us.... Now...how many thousanths (0.001) of an inch do you press down in a single pass....in general terms. Many of us need some "general" how-to operational instructions. I have been looking into the idea of making one of these myself with some of the things I have laying around. With my machine shop equiptment this could be a doable project. Thank you for posting all you have..but I do desire more. Carry on Quote Link to comment Share on other sites More sharing options...
CAL G Posted March 8, 2013 Author Share Posted March 8, 2013 I usually press down about 3/32 at a time but I am sure it could do more. It is hard to get is jammmed into the rolls it you try to take to much at one time. That is great info for all of us.... Now...how many thousanths (0.001) of an inch do you press down in a single pass....in general terms. Many of us need some "general" how-to operational instructions. I have been looking into the idea of making one of these myself with some of the things I have laying around. With my machine shop equiptment this could be a doable project. Thank you for posting all you have..but I do desire more. Carry on You have to remember that a rolling mill distorts the steel because of the nature of the machine. The rolls tend to extrude the steel as it passes between the rolls because the contact point that presses down on the steel is not parallel to the center line of the rolls where as a press or trip hammer stretches the material because the downward force is a 90 degrees to the material. Kind of hard to explain without a picture for explanation. So if you want to make perfect patterened damascus a rolling mill is not the machine to do it with. However with that being said if you want to rollout 52100 from bearings or make random damascus there is no faster way of doing it. Ifyou want to make sure the final pass on a piece of damascus is a consistant thickness just take a 1/32 pass, it comes out real smooth and requires very little grinding to clean up the billet. Quote Link to comment Share on other sites More sharing options...
BM454 Posted March 8, 2013 Share Posted March 8, 2013 Sweet all together. The mill would save so much time as far as finishing goes. I was thinking about buying a surface grinder but, this has me thinking. Scott Quote Link to comment Share on other sites More sharing options...
CAL G Posted March 11, 2013 Author Share Posted March 11, 2013 Dave here are the specs on the design of the rolling mill. Sorry I don't have any pictures that really show the detail of the thickness control. HERE ARE THE SPECS Hydraulic motor selected is a 104-1028 Char Lynn @1500 psi it puts out about 5000 in-lbs torque ( should hve read 5000 not 1500) @ 5GPM that motor turns about 39 RPM, this information is from their specifications The pump delivers 5 GPM 5 GPM @ 1500 psi = 5 x 1500 /1714/.85 = 5.12 HP My electric motor on the power unit is a 5 HP The roll diameter is 3 inches, therefore the circumference is 3.14x 3 = 9.42 inches / revolution @39 RPM the roll velocity would be 39 x 9.42 /60 = 6.123 inches per second The drive reduction on the sprockets is 38 teeth/15 teeth = 2.53:1 so the mill velocity is 6.123/ 2.53 = 2.42 inches/ second The force the roll moves the steel through the mill is: Motor torque x the reduction divided by the roll radius = 5000 x 2.53 / 1.5 = 8433 pounds Just fixed up a typo error on the motor torque. Quote Link to comment Share on other sites More sharing options...
homeshow Posted March 11, 2013 Share Posted March 11, 2013 A hydraulic press is a great tool. With the right dies you can do a lot. Quote Link to comment Share on other sites More sharing options...
Richard Furrer Posted March 11, 2013 Share Posted March 11, 2013 very good unit you made CAL Inch pounds or 8433? That is rather a bit. What is the max reduction you can take per pass on 2" wide stock? Ric Quote Link to comment Share on other sites More sharing options...
CAL G Posted March 12, 2013 Author Share Posted March 12, 2013 I says that this topic has been moved. Where did it get moved to? Mod note: you are there now, look at top of page and you will see where it is Quote Link to comment Share on other sites More sharing options...
WmHorus Posted March 12, 2013 Share Posted March 12, 2013 Are there plans online for rolling mills? McDonald Rolling mill see this section Quote Link to comment Share on other sites More sharing options...
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