Technical Topics-Changsha Langfeng Metallic Material Co., Ltd.

Bolt heat treatment method
Bolt heat treatment method Bolt processing technology: hot-rolled rod – (cold dial) – ball (softening) annealing – mechanical descaling – pickling – cold dial – cold forging – thread processing – heat treatment – a test, the design of steel fasteners Manufacturing, the correct choice of fastener material is an important part, because the performance of fasteners and materials are closely related. Such as improper selection of materials or incorrect, may result in performance requirements, shortened life expectancy, or even accidents or processing difficulties, high manufacturing costs, the choice of fastener materials is a very important part. Cold heading steel is the use of cold heading forming process of high interchangeability of fasteners steel. Because it is the use of metal plastic processing molding at room temperature, the deformation of each part is large, the deformation rate is also high, therefore, the performance of cold heading steel material requirements are very strict. On the basis of long-term production practice and user research, combined with GB / T6478-2001 Technical Requirements for Steel for Cold Heading and Cold Extrusion GB / T699-1999 “High-quality Carbon Structural Steel” and Target JISG3507-1991 “Cold Heading Steel with carbon steel wire rod “feature to 8.8, 9.8 bolt...
Thick coating improves the service life of indexable inserts
Today’s oxide layer has no limitations for pvd technology. In the future, new coating materials will be able to adapt to the market and open up new horizons with the help of aluminum, chromium, zirconium and other elemental components. This type of coating material can be combined with super-nitride. Whether it is a typical pvd 3 μm or a thickness of 8 to 10 μm or more, it can be manufactured according to the different edge features of the insert and the application occasion. In addition, there are a number of new pre-treatment and secondary treatment methods available, combined with the use of the best coating materials, allows customers to produce a lot of unique products.
Cutting tool coating application
Cutting tool coating refers to the surface of the mechanical cutting tool coated with a layer of hardness and high wear resistance of the material. In order to meet the requirements of high efficiency, high precision and high reliability in modern machining, the world’s manufacturing industry has paid more and more attention to the development of coating technology and its application in tool manufacturing. In the industrialized countries, Layer of the tool in the overall proportion of nearly 60%.
Comparison of Long – term Corrosion Protection Technology for Steel Structure
For example, Norwegian Offshore Oil Platform with a total weight of 2,300 tons built by Dalseide & Floysand in Norway in recent years employs 14 G35-LD / U3 spraying equipment for the entire arc spraying and 35 tons of AlMg5 wire for 3 months for 100 spraying workers. It is one of the larger models in the world for long-term preservation of thermal spraying. Long-term preservation of petrochemical pipelines also use a thermal spray anti-corrosion technology Of course, the application of thermal spraying technology construction, there is a certain amount of noise and dust. For the steel factory when the production of environmental requirements are quite strict, and the current installation of the old or the late steel construction maintenance of the basic no high requirements, but must strengthen the protection of construction workers.
The characteristics of arc spraying
1, long life preservative, other anti-corrosion methods can not be compared, a corrosion, once and for all. 2, equipment and raw materials made up to 100%, the process is simple. Compared with hot dip zinc, arc spray flexible and convenient, a set of equipment for different shapes and sizes of parts for anti-corrosion construction, easy to flow construction. And hot dip zinc corrosion different size and shape components will be limited by the size of the pool, nor flow of construction. 3, environmental aspects. Using special supporting, low-cost dust removal facilities, so that emissions are up to national environmental standards. And paint and hot dip plating rust acid and hot zinc production of zinc steam are no environmental protection measures. For more information please link: www.langfengmaterials.com,please contact us: sales@langfengmaterials.com
Characteristics, Technology and Advantages of Arc Spraying Technology
At present, the arc spraying technology in the country has been the attention of many departments, is being more and more widely used. Arc spraying technology can be applied to corrosion, wear, decoration and the formation of special functional coatings and other fields, especially in the field of corrosion, arc spraying is the most effective and most economical long-term anti-corrosion technology. The author introduces the characteristics of arc spraying and arc spraying machine, the new development of arc spraying technology and its advantages in the field of steel structure anticorrosion. The arc spray is the use of two sprayed wire as a consumable electrode, the use of two wire ends of the arc generated by the arc to melt the wire, with compressed air to melt the molten metal was micro-droplet, and make Which is accelerated at a high rate after deposition to the substrate surface to form a coating of a thermal spraying method. For more information please link: www.langfengmaterials.com,please contact us: sales@langfengmaterials.com

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