Mild Steel Tube Process Choose: Cold Stamping VS Hot Rolling

Mild steel tube is one of the important carbon steel pipes in the steel industry. Its production process involves two processes, cold stamping and hot rolling. There are obvious differences between these two processes in the production process. This article will introduce the difference between cold stamping and hot rolling of mild steel tube in detail.

Cold stamping process of mild steel tube

The cold stamping process is to stamp the mild steel tube at room temperature to obtain parts of the required shape and size. Its core feature is to change the shape and size of the pipe by mechanical force to meet specific parts requirements. The advantages of the cold stamping process are:

1. High precision and high quality

Due to processing at room temperature, cold stamping mild steel tubes can maintain high dimensional accuracy and surface quality, which is suitable for parts with high precision requirements.

2. High efficiency and low cost

The cold stamping process does not require heating, has low energy consumption, high production efficiency, and obvious cost advantages.

3. Diversified mild steel tubes

Cold punching can produce plates or parts of various shapes and specifications, such as round tubes, square tubes, rectangular tubes, oval tubes, etc., to meet the needs of different application scenarios.

However, the limitation of the cold punching process is that it has high requirements for material plasticity, and certain internal stress may be generated during the processing, affecting the subsequent performance of the material

Hot rolling process of mild steel tubes

The hot rolling process is to roll mild steel tubes at high temperatures to obtain pipes of the required shape and size. Its core feature is to achieve the forming of pipes through high-temperature plastic deformation. The main advantages of the hot rolling process include:

1. High plasticity and toughness

High-temperature processing refines the grain size of the material, and the mild steel tube has better plasticity and toughness, which is suitable for structural parts and load-bearing parts.

2. High material utilization rate

The hot rolling process can make full use of materials, reduce waste, have high production efficiency and low cost.

3. Diversified mild steel tubes

Hot rolling can produce pipes of various specifications such as round tubes, square tubes, and special-shaped tubes to meet a wide range of application needs.

However, the disadvantage of the hot rolling process is that the surface quality is relatively poor, and high temperature treatment may have a certain impact on material properties, such as grain coarsening or oxide layer formation.

Performance comparison between cold stamping and hot rolling

1. Dimensional accuracy and surface quality

Since the cold stamping process is based on hot-rolled steel plates and is carried out at room temperature, its mild steel tube has good dimensional accuracy and surface quality.

The hot rolling process is carried out at high temperature, so its mild steel tube has good plasticity and toughness, but the surface quality is relatively poor.

2. Material properties

Cold stamping mild steel tubes are processed at room temperature and basically have no effect on material properties.

Hot-rolled mild steel tubes may have a certain impact on material properties due to high temperature treatment.

3. Applicable scenarios

The cold stamping process is suitable for parts with high precision and high surface quality.

The hot rolling process is more suitable for structural parts with high requirements for plasticity and toughness.

Process selection suggestions

In actual production, the selection of cold stamping or hot rolling process should be considered comprehensively according to specific needs and product requirements:

1. High precision and surface quality requirements

For example, automotive parts, home appliance shells, etc., cold stamping process should be selected.

2. High plasticity and toughness requirements

For example, building structural parts, mechanical bearing parts, etc., hot rolling process should be selected.

3. Cost and efficiency requirements

Hot rolling process has more cost advantages in large-scale production, while cold stamping process is more competitive in small batch and high-precision production.

Summary

In summary, the cold stamping and hot rolling processes of mild steel tubes have obvious differences in production process and mild steel tube performance. In the production process, the appropriate process should be selected according to the specific needs and requirements of mild steel tubes. At the same time, mild steel tubes produced by different processes should also be used reasonably according to their characteristics and application fields.

Read more: Difference between mild steel pipe and carbon steel pipe