Our company had negotiations with the client in 2017, and they provided specific requirements such as length, width, height, purpose, etc. They also prepaid a drawing design fee of $1500. Our engineers completed the drawing design within one month, as shown in the attached anchor bolt layout and 3D model.

After the customer confirms the final drawings, an order is signed and a 30% deposit is paid in advance. Our engineers refined the production drawings of the components within 10 days, as shown in the attached drawing model (the drawings are relatively large and will be sent separately).

The overall project involved manufacturing approximately 320.6 tons of goods within 2 months, which were shipped in 14 large containers. Please refer to the total parts list and tonnage statistics for details. Specifically, as follows:,

Material: Q345B.

Tonnage: 320.6 tons.

CFR ton price: 1409 USD/ton.

Quality requirements: Welding shall be carried out according to the customer's requirements and shall be inspected by a third-party international welding association. Magnetic particle testing shall be completely qualified.

Delivery time: 2 months.

Final payment: After the customer arranges for third-party testing to pass, they will pay 70% of the final payment before shipment.

Welding is a critical process in the manufacturing of steel structures, and it is essential to consider various factors to ensure the quality and integrity of the final product. It is important to have a reasonable optimization of the welding process and to control heat dissipation during welding. In this article, we will discuss the key factors to consider in welding and introduce the commonly used welding methods.

(1)Reasonable optimization of welding process

The welding process for steel structural parts includes preheating, processing, and correction, and it is crucial to adopt the appropriate methods for each stage. Different methods of preheating, such as rigid fixing, pre-tension, and reverse deformation, should be used based on the characteristics of the steel structure. For example, the deformation of large steel structures during welding can significantly impact the overall product, and reverse deformation must be used during preheating to compensate for this. Additionally, controlling heat dissipation is vital to reduce the probability of weld deformation.

(2)Heat dissipation control during welding

Controlling heat dissipation during welding is essential to ensure even stress transmission and reduce the likelihood of weld deformation. Modern science and technology offer special means for heat dissipation during welding, which can greatly improve the quality of the welding process. While the operation process may be more complicated, the application effect is more evident.

Introduction to welding methods

Various welding methods are commonly used in the manufacturing of steel structures, each with its own principles and applications. Electrode arc welding, submerged arc welding, carbon dioxide gas shielded welding, MIG/MAG welding, and plasma arc welding are among the commonly used methods. These methods offer different approaches to achieve high-quality welds and are chosen based on the specific requirements of the steel structure.

Conclusion

In conclusion, the control method for steel structure processing and welding is crucial to achieve high-quality and durable steel structures. Factors such as the reasonable optimization of the welding process and heat dissipation control are key to ensuring the integrity of the final product. Additionally, understanding the principles and applications of different welding methods is essential to choose the most suitable approach for specific steel structures. At Jiahexin Steel Structure, we are committed to applying advanced welding techniques and ensuring the highest quality in the manufacturing of steel structures.

Welding deformation is a common challenge during the welding of steel structures. This deformation can occur as a result of the non-linear temperature change during the welding process, leading to either rigid or plastic deformation. This deformation can have severe implications on the structural integrity of steel components, impacting their resistance to fatigue strength, toughness and corrosion. To minimize welding deformation, it is essential to implement specific technical measures.

Reasonable Arrangement of Welded Grooves

One effective measure to reduce welding deformation is the reasonable arrangement of welded grooves. By ensuring that the grooves are positioned optimally, it is possible to mitigate the potential for deformation. Proper groove alignment can help to minimize the stress concentration during the welding process, thereby reducing the risk of deformation.

Optimizing Welding Procedures

Another crucial aspect to consider is the optimization of welding procedures. It is important to make reasonable arrangements for welding sequences and techniques in order to avoid stress concentration. By carefully planning and executing welding procedures, it is possible to reduce the likelihood of deformation occurring during the welding process.

Anti-deformation Measures for Fillet Welding

When it comes to fillet welding, it is imperative to take specific anti-deformation measures. For instance, when working with symmetrical members, implementing synchronous symmetrical welding technology can help to minimize deformation. This approach involves carefully coordinating the welding process to ensure that the structure remains symmetrical, thereby reducing the risk of deformation.

Selection of Appropriate Materials and Processes

Additionally, the selection of appropriate welding materials and processes is essential in mitigating welding stress and deformation. By choosing the right materials and adopting suitable welding processes, it is possible to minimize the impact of welding stress on the overall structure. This can help to enhance the overall integrity and durability of the steel components.

Low-Temperature Welding Considerations

When employing low-temperature welding technology for steel structures, it is crucial to consider the impact of temperature on welding strength. Low temperatures can significantly affect the strength of steel plates, leading to potential embrittlement. Careful attention should be paid to the influence of ambient temperature on welding, particularly when working with thick plates. Special precautions should be taken to mitigate the risk of embrittlement and ensure the overall structural integrity.

At Jiahexin Steel Structure, we understand the importance of implementing effective measures to control and solve the problem of welding deformation in steel structure processing. By prioritizing careful planning, precise execution, and the selection of appropriate materials and processes, we aim to deliver high-quality steel structures that meet the highest standards of safety and durability. With a commitment to excellence and innovation, we strive to address the challenges associated with welding deformation, ensuring the reliability and longevity of our steel structures.