Saw blade surface treatment
Band saw production has a long history, although considered mature industries, but its production technology in the continuous development. In order to reduce the workload and ensure the quality of work, rely on the band saw to complete metal cutting operations of all users are looking for ways to make sure the work efficiency. Longer, more direct, faster the three standard basically sums up the comprehensive production-oriented band saw the needs of its users. Based on this, band saw manufacturers are actively research and development the next generation technology of band saw.
Previously for other cutting tool industry development after optimization technology, has now been applied to the band saw in the design and improvement of the products. In order to improve the technical level of the band saw and must work to reduce unit cutting costs. The key lies in the new type double metal saw blade edge and back material, improvement of carbide blade products, surface coating (TiN and AlTiN) and heat treatment technology and the use of advanced computer modeling technology to design new type tooth.
How to combine the technology with its own unique technology, to provide users with new products, has become an urgent problem in the band saw blade manufacturer.
Saw blade surface treatment technology and process
Band saw manufacturers currently are working to improve the special surface treatment technology of saw blade. The technology can greatly reduce the saw blade for metal fatigue fracture. May cause the premature fracture of saw blade has a variety of factors, including improper saw belt tension, saw with guide is bad or improper adjustment, saw wheel saws with rutting is not correct, as well as between saw wheel and guide saw take seriously distorted. When this happens, the stress on the saw blade usually appears in the location of the fracture may occur.
After heat treatment and annealing was carried out on the blade surface treatment can greatly reduce the blade stress fracture phenomenon. Is under certain pressure, the surface treatment on the blade surface with a thin layer of the outer layer. When surface after dealing with the densification, it is not easy to break. Surface treatment can guarantee the stability of the tooth form of smooth surface, thus to withstand the impact of the cutting and vibration, ensure the machine to receive strength evenly in cutting tools, and extend its service life.
Shot blast
Shot peening treatment to prevent stress defects in the saw blade industry is a relatively new treatment technology, but in the strict in fatigue life of the aviation industry has a successful application of precedent. Unlike other industries, relatively thin cross section of a band saw blade, the band saw manufacturers in determining the best stress structure of band saw material's biggest problem.
Shot blast is under certain conditions, with a particular medium (usually round steel ball) bombardment of material surface treatment technology. In addition to use steel ball for shot blast, you can also use other media, such as glass beads, ceramic beads, and small piece of wire. Each medium should be according to the processing of materials as well as needed to achieve the treatment effect of choice.
After determine the use of medium, can through a variety of parameters under the condition of test to obtain the desired effect, and these parameters include material, shot peening medium size, and the strength of the treatment process and time. Another challenge is the development and application cost under the condition of the technology to ensure competitiveness. Shot peening is a complex process, but it can get the fatigue fracture strength is improved and a more uniform blade edge.
With the advance of sawing machine level, the hardness of materials will be more and more high, the production efficiency will become the user value factors. At present, the world's main saw blade manufacturers in developing the next generation of products, to meet the demand. Looking to the future, on the one hand, can be in the band saw production industry to launch better products to optimize the existing technologies, and to provide users with better than a longer service life of existing products, sawing straight blade, faster; On the other hand, the use of advanced surface treatment technology is also a kind of economic and feasible method.
