Core Technology

In April 2003, our company received the customer's order to design, process and export three double-flanged shafts to the United States. The size of the double end of the shaft is Φ 1009mm, the intermediate shaft part is Φ 550mm, flaw detection has reached class A, the total length of this part is 8m, and the total weight of each part is 8.6 tons.

According to the technical requirements, it needs to be forged into a titanium ingot. The total weight after forging needs to reach 11 tons, and the largest furnace in China is only 10 tons. The dimensional accuracy of the drawing is 0.127mm, and the geometric tolerance is 0.8mm. The difficulty of this product lies in its heavyweight, complex smelting and forging process, high mechanical properties, flaw detection should reach above grade A2, and the processing itself has large deflection, In the process of machining, the deformation of parts is large, and the geometric tolerance is difficult to ensure.

Finally, through the research of a professional technical team, our company finally ensured the drawing requirements and won high praise from customers by selecting reasonable machine tool parameters, including using special cutting fluid and making special tooling fixtures. In December of the same year, the customer ordered additional similar parts Φ One 127 * 12m mixing shaft. This part belongs to the shape of a slender shaft. After readjusting the previous product processing methods, the quality is finally guaranteed and delivered on schedule. It is recognized as a high-quality supplier by the customer.

The appearance of geometric tolerance and material stress deformation in the production and processing process is the main problem faced by the manufacturing of Titanium Precision box products, and many domestic peers do not have a good solution.

Our company grasped the good opportunity of cooperating with foreign enterprises to develop products, and flexibly adopted methods such as increasing aging treatment and mechanical vibration stress relief to overcome this problem.

At the beginning of 2002, our company cooperated with A US company to develop and produce titanium Gr2 casting, the core part of food machinery. The shape of the part is complex, the dimensional tolerance is required to be high, and the geometric tolerance is required to be 0.015mm. The deformation in the processing process is greater than the geometric tolerance, which is difficult to process.

Through the cooperative efforts of the technical team, the aging treatment is increased and the processing technology is improved. It has completed the process from R & D to mass production, laid the foundation for providing customers with high-quality complete sets of parts, gradually explored the global market through years of cooperation, and established a good strategic cooperative relationship with the customer.

Precision machining of titanium products with complex shapes and internal and external curved surfaces is an important sign to test the production capacity of titanium products enterprises. In production practice, through scientific and reasonable process flow setting, comprehensive use of production equipment, and self-developed calculation formula, our company has solved the problems of difficult processing of titanium products with complex shapes, waste products caused by tool damage in curved surfaces processing, and errors caused by formal programming.

In 2016, our company received an order from a large enterprise to develop and produce titanium parts for deep-sea instruments used in the military. This product is a key military product. The products are multi curved surfaces connected, the parts require high precision, the accumulated error of parts is very low, and the problems of processing and testing coexist. If these technical problems cannot be solved, it will directly affect the final assembly quality of finished products. Finally, after the technical team tackled the key problems, the technical production problems were solved, and a complete set of precision machining methods and process assurance measures for titanium products with complex shapes and internal and external surfaces were summarized, which laid a technical foundation for our company to undertake other important tasks of the same type.

In 2018, our company received an order from a large state-owned enterprise and organized the processing of titanium paraboloid parts as required. The size of the part is 2380 * 1645 * 530mm, which is in the shape of a full paraboloid, and the accuracy is required to be 0.1mm. At the same time, several parts are required to be assembled and tested.

The difficulty of this part lies in the large surface size, high precision requirements, accumulated errors in the assembly process, and the difficulty lies in the setting of processing technology. Finally, our company adopted a reasonable card loading mode and boldly changed the processing process route to deliver it to customers. The processing technology and results of this part have won high recognition from customers and promoted to a long-term cooperative outsourcing unit.

Compared with other kinds of titanium products, the production and processing of thin-walled titanium products are easy to produce hard spots and stress, resulting in irregular deformation, the processing process is not easy to control, and the comprehensive production is the most difficult. In this regard, our company has fully possessed the production capacity of high-precision thin-walled titanium products by adopting technologies and methods such as multi-process heat treatment, reasonable setting of allowance removal mode, design and application of special tooling, and so on.

The thin-walled titanium assemblies exported to Switzerland in 2013 require the company to design, process; and produce more than 100 sets of thin-walled titanium backplates. The process of the project is complex, the surface treatment finish is required to be high, the machining accuracy is as high as ± 0.01mm, the position degree can be controlled within 0.01mm, and the product finish is required to be below 0.8A mirror. The thinnest part of the product is only 1mm, which is very easy to deform during processing.

After the technical team tackled the key problems, independently developed the production process and technical process, and adopted the special tooling processing process, which perfectly solved the processing accuracy, product surface finish, position controllability, and extremely easy deformation in the processing process. For the project, the company has applied for a utility model patent to the State Intellectual Property Office.

By using the 3D model software modeling technology, the Technology Department of our company can build a model with 3D data from the plane drawings through the virtual 3D space, so as to better refine the customer's product requirements. It has a good application to the product structure requiring fine, elastic and complex, and is suitable for quantitative production.