What is Pipe Bending?

The bending pipe is bent by a complete set of bending equipment, and is divided into two processes, cold heading and hot pushing. No matter what kind of machine equipment and pipeline, most of them use elbows, mainly used for oil, gas, fluid, engineering bridge construction and so on.

Analysis of the main reasons for the decline in the quality of elbows and methods of attention:

A pipe bending device is characterized in that it comprises a pipe bending disc and a certain shape of a pipe; the shaped pipe is inserted from the tail end of a steel pipe that needs to be bent, and the shape of the shape of the pipe is tapered, which can bear

1. Divided by material:

Carbon steel: ASTM / ASME A234 WPB, WPC

Alloy: ASTM / ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV

Stainless steel: ASTM / ASME A403 WP 304-304L-304H-304LN-304N

ASTM / ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM / ASME A403 WP 321-321H ASTM / ASME A403 WP 347-347H

There are two main international pipe flange standards, namely the European pipe flange system represented by German DIN (including the former Soviet Union) and the American pipe flange system represented by American ANSI pipe flange. In addition, there are Japanese JIS pipe flanges, but they are generally only used for public works in petrochemical plants, and have a small international impact. The pipe flanges of various countries are introduced below:

1.European system pipe flanges represented by Germany and the former Soviet Union

2. American system pipe flange standards, represented by ANSI B16.5 and ANSI B 16.47

3. British and French pipe flange standards. Each country has two bushing flange standards.

The internationally accepted pipe flange standards can be summarized as two different and non-interchangeable pipe flange systems: a European pipe flange system represented by Germany; and an American pipe flange represented by the United States. system.

IOS7005-1 is

Pipe benders are broadly divided into CNC pipe benders, hydraulic pipe benders, etc., which are used in electric power construction, public railway construction, bridges,

Mainly used

Hydraulic electric pipe bender horizontal hydraulic pipe bender multifunctional rolling pipe bender digital display pipe bender

(1) Instruction manual for electric oil pump.
(2) work first

Bender

Before bend operation

Pipe Bending Atlas

1. The machine must be well grounded, and the wire must not be less than 4mm2 copper flexible wire. It is not allowed to connect the power supply voltage exceeding the specified range. Do not insert or remove the plug-in card with power on or use a megohmmeter to test the control circuit. Otherwise, the device may be damaged.
2. When plugging or unplugging the connector, do not pull the wires or cables to prevent soldering.
3. Proximity switches, encoders, etc. cannot be hit with hard objects.
4. Do not bump the display unit with sharp objects.
5. The electrical box must be placed in a ventilated place, and it is forbidden to work in dust and corrosive gas.
6. Do not install or change the input and output terminals of the PC without permission.
7. The motor must be re-confirmed when changing the power of the machine.
8. The machine tool should be kept clean. In particular, there should be no foreign matter in the sliding grooves such as the clamping block and the slider.
9. Add lubricating oil to the chain and other sliding parts regularly.
10. The power must be disconnected during cleaning and maintenance.
11. Preparation before starting: Check whether the oil level in the fuel tank reaches the oil level line, fill up the lubrication points, turn on the motor to confirm the rotation, check the pump for abnormal sounds, and check the hydraulic system for oil leakage after turning on (the angle encoder is not allowed) Come on)
12, pressure adjustment: use electromagnetic relief valve to adjust the pressure to ensure that the system pressure reaches the required working pressure, generally not higher than 12.5Mpa.
13. Mold adjustment: mold installation requires the mold and the clamping block to be centered, and the clamping block can be adjusted with bolts; the booster block and the mold are centered, and the booster block is adjustable; the core head and the mold are centered, and the core head frame is loosened. Bolt, tighten the bolt after adjusting the center.

Pipe bend operation

1. When the machine is started, pay attention that the human body must not enter the range swept by the rotating arm.
2. When the machine tool is working, all personnel are prohibited from entering the space swept by the swivel arm and pipe fittings!
3. The hydraulic system of the machine tool uses YA-N32 ordinary hydraulic oil (original brand No. 20). Under normal circumstances, it should be replaced once a year.
4. When adjusting the machine tool (mold), the adjuster should press the button to adjust. Never adjust it on the machine with one person and operate it on the control cabinet with the other.
5. Remove the mandrel when adjusting the machine tool or driving the empty car.
6. The pressure of the hydraulic system cannot be greater than 14Mpa.
7. When manually adjusting the speed of the side thrust cylinder, the swing arm should be adjusted to 900. The adjustment speed is synchronized with the linear speed of the edge of the mold when the swing arm is turned. speed.
8. After using the machine for a period of time, the tension of the chain should be checked to keep the upper and lower chains tight.
9. During automatic operation, in the core bending mode, before the bent arm returns, the operator must ensure that the mandrel is in the tube or that the mandrel is not blocked when the bent arm returns. Otherwise, the mandrel or mandrel may be damaged. Bend or break.
3. After the work is completed, cut off the power and do the cleaning and lubrication work ^[1] .