複合耐摩耗鋼板の性能

This guide covers the performance aspects of composite wear-resistant steel plates. It aims to provide useful information for all readers.

耐摩耗性

The wear resistance of composite wear-resistant steel plates refers to their ability to withstand wear under certain friction conditions. It depends on the type of wear and the structure of the cladding layer. Wear resistance is a crucial application of cladding.

耐食性

Corrosion is the damage caused by the surrounding medium to the metal. The corrosion resistance of cladding alloys depends on the service conditions of the cladding parts. Different working environments and stresses affect corrosion resistance. Common corrosion-resistant cladding metals include copper-based, nickel-based, cobalt-based alloys, and austenitic stainless steel. 例えば, the inner walls of petrochemical containers are often clad with stainless steel. During cladding, the dilution rate of the matrix to the cladding layer should be monitored to ensure the required alloy content for corrosion resistance.

耐衝撃性

Composite wear-resistant steel plates can be damaged by foreign objects, often alongside abrasive wear. The impact resistance of cladding alloys depends on their compressive yield strength and toughness. Yield strength relates to plastic flow under impact, while toughness is connected to cracking and peeling.

High-Temperature Usability

The performance of cladding alloys at high temperatures is determined by their heat resistance. Materials used at high temperatures must endure wear, 腐食, and stress release, necessitating thermal strength, 硬度, fatigue resistance, creep resistance, 耐酸化性, and high-temperature gas corrosion resistance. The manganese content in the cladding layer enhances oxidation resistance. Cladding options include high-manganese martensitic stainless steel, tool steel, die steel, nickel-based welding alloys, and cobalt-based cladding alloys.

Preventing Cracking and Peeling

Differences in composition and linear expansion coefficients between the cladding layer and the base metal can cause internal stress, leading to cracking and peeling during cooling. これを防ぐには, it is crucial to minimize welding thermal stress during surfacing.

Ensuring High Hardness in Wear-Resistant Layers

To maintain hardness in wear-resistant layers, it is essential to prevent excessive dilution and burning of alloy elements. Using a small current and short arc welding can help achieve this.

This overview provides a foundational understanding of composite wear-resistant steel plates, highlighting their key features and considerations for effective use.

泰達江華金属 -17 年
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