At present, the pipe bending machine industry has provided more and more technical support for the manufacturing industry. According to the distribution manufacturing sector sales statistics, pipe bending machine is mainly used for sheet metal production which accounting for 35%, car industry accounting for 34%, and aviation industry accounting for 12%, the other 19%. Good quality pipe bending machine molds can also attract users. For users, high quality and low price products have always been the goal of purchasers, while good products can improve the efficiency of enterprises, which means that it can also save processing costs and improve economy benefit. So what should be paid attention to during installing the tube bending machine parts?

1. The bending control of the pipe bender.  The rebound is very powerful if don't using mandrel. This has to be considered when choosing a bending die. Depending on the diffrent bending radius, the tube will rebound by 2 to 10 degrees and may increase the bend radius of the tube. The smaller the bend radius, the smaller the rebound. The rebound is affected by the position and pressure of the die. This method produces different radius for the same bending die. Moreover, the position of the mandrel causes a great rebound, which reduces the angle of the bend and may increase the radius. When the radius is increased, the mandrel should be pushed (to the tangent point). There are no ready-made formulas for adjusting the mandrel settings. Obviously, when the rebound angle is more than 3 degrees, the mandrel is too far back and the bending radius of the tube will be bigger than the bending die.

2. The bending mandrel is too far forward. There are several consequences if mandrel is too far ahead. There will be a bulge at the end of the tangent point on the bending outside, and there will be a depression at the beginning of the cut point inside the bend. These deformations are exemplified on a tube. However, due to the difference in shape and bending radius of the mandrel, it does not always occur at the same time. Feel free to use the insert mandrel, the length of the clamp die should be at least 3 times of the tube diameter.

3. The bending mandrel is too far behind. The mandrel slightly forward, the front does not produce wrinkles but begins to occur at the back of the tangent point. The mandrel is still not positioned too far forward to create the necessary pressure on the inside to shrink the material. When the bent pipe is removed from the bender mold, there is a large wrinkle. It is therefore necessary to advance the mandrel until the material is not squeezed between the mandrel and the bending die.

4. When the oil ball steel ball can not be reset normally, we can extend the rod, to add pressure on the plunger pump. Then hit the bangs on the handle seat. The valve ball can be reset.

5. Insufficient oil absorption of large and small pumps. This is caused by insufficient garbage or oil in the filter screen inside the filter. Unscrew the curved mold parts, clean the net body with gasoline and fill it with oil.

6. Oil leakageof the top of the ejector. It is mainly due to the damage of the top seal of the piston rod, you can replace the 14 × 2.4 O-type seal.

7. The mold mounting hole is cracked. Generally, it is caused by lateral load when the mold item is out. For example, the bent workpiece is not in right place for next bending. We can checked whether the positions of the two support wheels are symmetrical, and add oil between the support wheel and workpiece. Lastly, place it in the second bend position.