Nickel-Based Alloy Clad Plate Suppliers and Manufacturers

The production of nickel-based alloy composite plates is a complex process involving a variety of technical methods. The main purpose is to firmly combine nickel-based alloys with other metals to form a composite material that has the performance advantages of nickel-based alloys and reduces costs. There are several main processes for the production of nickel-based alloy composite plates:

1. Explosion Composite Method

The explosion composite method is one of the most widely used composite plate manufacturing processes. It mainly uses the energy of the explosion to combine two metal materials by high-pressure impact.

Production Steps:

• Prepare metal materials: Clean the nickel-based alloy plate and the substrates such as carbon steel and stainless steel to ensure that there are no pollutants on the surface.

• Arrange materials: Place the nickel-based alloy plate on the substrate (metal plate) to be composited, and there may be a certain gap between them.

• Explosion detonation: Cover the nickel-based alloy plate with a layer of explosives, and by controlling the energy of the explosion, the nickel-based alloy plate and the substrate are combined by high-pressure instantaneous collision in a very short time.

• Composite molding: After the explosion, the bonding area between the materials will undergo strong plastic deformation to form a strong metallurgical bond.

The advantages of this method are that it can be composited at room temperature, does not require a high-temperature environment, the composite interface strength is high, and the material is not easy to deform or damage.

2. Hot Rolling Composite Method

The hot rolling composite method is to roll the nickel-based alloy and the substrate at high temperatures so that the two form a metallurgical bond under high temperature and high pressure.

Production Steps:

• Heating preparation: Heat the nickel-based alloy plate and the substrate to a certain temperature, usually around 1000°C.

• Rolling composite: Through multiple rolling processes, the two layers of metal plates are pressed together under high temperature and high pressure to form a strong bond between the interfaces.

• Cooling and post-processing: After rolling, the composite plate is gradually cooled, and then necessary subsequent processing steps such as shearing and straightening are carried out.

This method is suitable for large-scale production, and because it is carried out at high temperatures, the metallurgical bonding quality of the composite plate is better.

3. Cold Rolling Composite Method

The cold rolling composite method refers to combining the nickel-based alloy with other metal materials by rolling pressure at room temperature and then improving the interface bonding strength by heat treatment.

Production Steps:

• Cleaning: Remove the oxide layer and dirt on the surface of the nickel-based alloy plate and the substrate.

• Cold rolling composite: Apply great pressure to the two layers of materials through the cold rolling mill to make them composite at room temperature.

• Heat treatment strengthening: The composited materials undergo subsequent heat treatment processes, such as annealing, to improve the metallurgical bonding strength of the interface.

The cold rolling composite method is more energy-efficient than the hot rolling composite method and is suitable for manufacturing thin plate composite plates.

4. Explosive Welding + Rolling Composite Method

This method combines the explosive composite method with the rolling method. First, the explosive composite method is used to initially combine the nickel-based alloy with the substrate, and then the composite plate is finished by hot rolling or cold rolling process.

Production Steps:

• Preliminary composite by explosive composite method: The two metals are initially composited together using the explosive composite method.

• Subsequent rolling process: Further reduce the material thickness through hot rolling or cold rolling, and improve the composite quality and surface flatness.

This method combines the advantages of the explosive composite method and rolling process, can improve the composite quality, and is suitable for application scenarios with high-performance requirements.

5. Brazing Composite Method

The brazing composite method uses high-temperature brazing materials to combine nickel-based alloys with other metal materials through brazing metal during heating to form a composite plate.

Production Steps:

• Surface treatment: Clean the surface of the metal to be composited.

• Coating brazing material: Coat a layer of brazing material on the contact interface of the two metals.

• Heating brazing: Heat the metal material to the brazing temperature so that the brazing material penetrates the metal surface in the liquid state to form a strong bonding layer.

The brazing composite method is suitable for some composite plate products with special structures or high requirements, but the production efficiency is low.