Introduction
The GB/T 14991-94 replace GBn 174-82, is a new standard with improved characteristics and performance. The new standard requires an increased strength level that allows much less material to be used in order to achieve the same strength. This requires a greater focus on manufacturing processes to ensure that the required strength levels are consistently achieved.
Improved Characteristics
GB/T 14991-94 has improved characteristics compared to the GBn 174-82. The material is made from high silicon steel and is an iron-silicon alloy. This makes the material both physically and chemically resilient. It also increases permeability and lessens the impact of ferromagnetic eddy current losses.
The improved characteristics of GB/T 14991-94 make it a preferred option for many applications. Its increased strength means a greater degree of resistance to corrosion, wear and fatigue. Its greater permeability allows for better transfer of magnetic fields. Its better electrical conductivity reduces the cost of operations due to less electromagnetic interference.
Manufacturing Process
To ensure the desired strength levels are consistently achieved, specific manufacturing processes are necessary. The steel is carefully processed and heat-treated to achieve a balance of physical and chemical characteristics. The material is then tested in accordance with the standards and specifications of the GB/T 14991-94.
The manufacturing process begins with carefully selected steel that is melted in an electric furnace. The steel is then processed into crystal forms and other shapes before being heat-treated. Heat-treating is essential to achieve the desired strength and performance. Depending on the application and steel grade, various other processing methods may be used such as forging, brushing, coating, etc. During this process, the material is monitored and tested to ensure it meets all of the requirements of the GB/T 14991-94.
Conclusion
GB/T 14991-94 is a superior standard to the GBn 174-82. Its improved characteristics and performance make it a preferred choice for many applications. To ensure its strength and performance, specific manufacturing processes and testing are required. This ensures the desired strength levels are consistently achieved and the material provides the desired results.
