What are Malleable Pipe Fittings

Malleable steel pipe fittings are pipe fittings made of malleable steel. Malleable steel is actually not steel, but malleable cast iron. The pipe fittings of this material can be machined, and have high mechanical properties, good plasticity and toughness, so they are widely used. The production process of malleable steel pipe fittings is very simple. It is first poured into white iron castings, and then can be treated by forge annealing. The annealing process technology is an important production process. Let's take a look at the material of malleable steel pipe fittings and the production process of malleable steel pipe fittings.

1. What are Malleable Steel Pipe Fittings

There are many types of pipe fittings, malleable steel pipe fittings are one of them, malleable iron is commonly known as malleable iron, the so-called malleable steel pipe fittings are pipe fittings made of malleable iron.

2. What is the material of the malleable steel pipe fittings?

The material of malleable steel pipe fittings is malleable steel. Malleable steel is not steel, but a special kind of iron.

It is obtained by tempering at high temperature and is often used to make pipe parts; in addition, although malleable iron is called malleable iron, it is not malleable. Like other pipe fittings, malleable steel cannot be forged, but it can be machined, and has high mechanical properties, plasticity and Good toughness. In addition, the malleable steel used in malleable steel pipe fittings is different because of the different matrix structure.

Its properties are also different. The two most common are black-heart malleable iron and pearlitic malleable iron: black-heart malleable iron has high plasticity and toughness; pearlitic malleable iron has high strength,

Hardness and wear resistance.

3. Production process of malleable steel pipe fittings

Malleable steel pipe fittings are made of malleable cast iron. In simple terms, the production process is to first cast white iron into white iron castings, and then forge annealing (so that the cementite is decomposed into agglomerates).

Graphite) process to obtain malleable steel pipe fittings. In the process of shoveling malleable steel pipe fittings, the annealing process technology is an important production process, and the annealing process is the key to improving the production effect of malleable steel pipe fittings; the annealing process of malleable steel pipe fittings is actually a heat treatment process. High heat preservation, cooling, low heat preservation, air cooling process and other methods are used to complete the whole heat treatment process. The smaller the temperature difference of annealing in the process, the better, and the effective control of the annealing temperature difference can not only improve the heat treatment effect of the malleable steel pipe fittings, but also ensure the malleable steel pipe fittings. Quality requirements can be met during the heat treatment process.

In addition, during the implementation of the annealing process, it is necessary to understand the chemical composition of the heat-treated malleable steel pipe fittings before ignition, and it is necessary to grasp the change of the chemical composition and the content of the chemical composition, so as to draw the regression analysis.

Lighting curve.