High Quality Pipe Die

Are you looking for  Pipe Die  that will provide exceptional performance? 

Tengdi Machinery is an excellent steel pipe making machine manufacturer with whom to explore collaborating. Tengdi provide a large selection of various  Pipe Die choices that are intended to meet your unique requirements. We can be sure that you will get the finest steel pipe making line option for your needs. Tengdi collaborate with skilled specialists who contribute their years of experience and guarantee that all of our works meet the highest standards.

The selection of pipe fitting molds needs to meet three principles: the mold meets the work requirements such as strength and toughness, the mold meets the process requirements, and the mold should meet the economical applicability.

The mold meets the requirements of working conditions

1. When the blank is plastically deformed in the mold cavity, it flows and slides along the surface of the cavity, causing severe friction between the surface of the cavity and the blank, resulting in the failure of the mold due to wear. Therefore, the material is one of the basic and important properties of the mold.

Hardness is the main factor that affects. In general, the higher the hardness of the mold parts, the smaller the amount of wear, and the better. In addition, it is also related to the type, quantity, shape, size and distribution of carbides in the material.

2. Strong toughness

Most of the working conditions of the mold are bad, and some often bear a large impact load, which leads to brittle fracture. In order to prevent sudden brittle fracture of mold parts during operation, the mold must have high strength and toughness.

The toughness of the mold mainly depends on the carbon content, grain size and organizational state of the material.

3. Fatigue fracture performance

During the working process of the mold, fatigue fracture is often caused under the long-term action of cyclic stress. Its forms include small-energy multiple impact fatigue fracture, tensile fatigue fracture, contact fatigue fracture and bending fatigue fracture.

The fatigue fracture performance of the mold mainly depends on its strength, toughness, hardness, and the content of inclusions in the material.

4. High temperature performance

When the working temperature of the mold is higher, the hardness and strength will decrease, resulting in early wear of the mold or plastic deformation and failure. Therefore, the mold material should have high resistance to tempering stability, so that the mold has high hardness and strength at working temperature.

5. Heat and cold fatigue resistance

Some molds are in a state of repeated heating and cooling during the working process, which causes the surface of the cavity to be subjected to tension, pressure and stress, causing surface cracking and peeling, increasing friction, hindering plastic deformation, and reducing dimensional accuracy, resulting in Mold failure. Hot and cold fatigue is one of the main forms of failure of hot work dies, and these dies should have high resistance to cold and heat fatigue.

6. Corrosion resistance

When some molds such as plastic molds are working, due to the presence of chlorine, fluorine and other elements in the plastic, strong corrosive gases such as HCI and HF are decomposed after heating, which erodes the surface of the mold cavity, increases its surface roughness, and aggravates wear and failure.