25MPa Elbow Cold Forming Machine 4000KN Clamping Force Easy Operation

Production of 90 Angle, bending radius of 1.5 carbon steel cold push elbow machine

1. Product Presentation

The forming process of cold extrusion elbow is to use the special elbow forming machine to put the tube blank into the outer die, and after the upper and lower die are combined, the tube blank will complete the forming process along the clearance activities reserved for the inner die and the outer die under the push of the push rod.The forming process of cold extrusion elbow is to use a special bending forming machine to put the tube blank into the outer die. After the upper and lower die are combined, the tube blank will complete the forming process along the clearance activities reserved for the inner die and the outer die under the push of the push rod.It is by an ox horn shape core head or mandrel into the mold, will put the pipe into the mold, the mold should have two semicircle, one up and one down, in the process of pushing is a process along the mandrel bending.With support in the back, the cutting tube section is inserted into the mandrel, and there is a bracket in the back to make the mandrel firm.There is a hydraulic ejector in the center, which is pushed forward by the hydraulic driving ejector.Push the tube along the mould semicircle groove along the mandrel until the top column reaches the end position, the limit switch lock dies, and then push the tube down to finish one.The outside diameter after shaping reached the size requirements of the product.The wall thickness is controlled by the wall thickness of the incoming material.In the process of pushing, the wall thickness under normal environment should not be changed, but if due to the cause of things, some places will produce the sign of reducing the wall, in order to be the same as the usual material, the wall thickness to add some margin, to prevent in the push system due to local reduction of thickness and out of tolerance.The outside diameter and wall thickness of the elbow have reached the requirements.The following will be a fine process, from the treatment of shot-peening penalty, the elbow of the inner and outer surface of the iron oxide removal, the two sides of the groove treatment to facilitate welding.After checking again at the end, make steel word, spray paint, pack wait for working procedure, can put in storage, leave the factory next.
Adopt inside and outside die cold extruding craft the elbow shape is elegant, the wall thickness is symmetrical, the size defect is small, therefore deal with stainless steel elbow especially outside is thin - walled stainless steel elbow shape more accept this craft manufacture.The accuracy of internal and external die used in this process is high;The wall thickness of the billet is also more demanding than the force.

I. before work:

1.For "shift records".

2.Check whether the electrical switch, travel limit switch is safe and reliable, whether the operation is flexible, whether the safety protection device is safe and reliable.

3.Check the oil gauge on the mechanical side to see if the hydraulic oil has reached the red line.

4.Check whether the pressure regulating valve on the oil pressure return circuit is in the state of no load.

5.Verify that what is written on the work instruction sheet matches what is written on the work item.

6.Install the mold and adjust the clearance.A. furnish first half of the lower die, furnish the support of upper die, c. b. adjust the Angle of upper and lower die is moderate, d. installed under the other half of the mould, e. test of upper and lower die and the turntable Angle deviation, f. installed master cylinder pushing rod, g. check whether the plunger, the first and second trip is moderate, h. on the feeding mode, i. under test mode and the main cylinder pushing rod and feeding mode is in the line.

7.After the above parts are confirmed to be normal, the work can start.
Ii. Work:

1.It is strictly prohibited to use the machine tool slide block slide table to maintain lubrication.

2.Materials must be lubricated.

3.When forming, the position of the weld shall be on the side of the bending part.

4.Work attention to concentrate, pay close attention to command signals, to cooperate with each other, coordination.

5.It is forbidden to place tools and other sundries in the extrusion range. Hands and feet should pay attention to safety.

6.When the die blocks the blank, stop the machine first, and then release it with the tool.

7.If any abnormal condition is found in the equipment or mold, it shall stop the machine immediately to check the reason and repair in time.

8.When the operator leaves the machine, stop the machine and turn off the oil pump motor.
Three, after work: 1.All operation control switches must be put in the "stop" state to cut off the power supply.2.Carry out daily maintenance.3.Fill in the "handover record" and do the handover work well.