imgboxbg

NEWS  CENTER

Shandong Zhengxiang Industrial and Mining Equipment Co., Ltd.

Supply of large pressed copper nuts for plate mills

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2020-07-01
  • Views:0

(Summary description)Shandong Zhengxiang Industrial and Mine is a professional manufacturer of copper nuts, providing processing and casting of copper nuts of various specifications and materials. The screw nut belongs to the technical field of steel rolling machinery.

Supply of large pressed copper nuts for plate mills

(Summary description)Shandong Zhengxiang Industrial and Mine is a professional manufacturer of copper nuts, providing processing and casting of copper nuts of various specifications and materials. The screw nut belongs to the technical field of steel rolling machinery.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2020-07-01
  • Views:0
Information

Shandong Zhengxiang Industrial and Mine is a professional manufacturer of copper nuts, providing processing and casting of copper nuts of various specifications and materials. The screw nut belongs to the technical field of steel rolling machinery. Because of its fast roll gap adjustment speed and large bearing capacity, it is widely used in plate rolling mills, strip rolling mills, blooming mills and section steel rolling mills, and has become one of the basic devices of rolling mills.

The large-scale reduction nut is an important part of the medium plate rolling mill. It not only requires its compact structure, but also has excellent wear resistance and high strength and toughness. The material of this part is lead green pot ZCuAl10Fe3. Due to its high technical requirements, As well as the heavy weight of the castings, we adopted the centrifugal casting process and used the induction electric furnace to smelt copper water to cast the large-scale pressed copper nut to ensure the technical requirements of the part.

Aluminum bronze 10-3 composition: copper Cu: remaining tin Sn: ≤0.3 (impurity) Zinc Zn: ≤0.4 (impurity) Lead Pb: ≤0.2 (impurity) Nickel Ni: ≤3.0 (not included in the sum of impurities) Aluminum Al: 8.5~11.0

Iron Fe: 1.0~4.0 Manganese Mn: ≤1.0 (not included in the sum of impurities) Silicon Si: ≤0.20 (impurities) Note: the sum of impurities ≤1.0

ZCuAl10Fe3 cast copper alloy has high mechanical properties, good wear resistance and corrosion resistance, can be welded, and is not easy to braze. Air cooling of large castings from 700 ℃ can prevent brittleness. ZCuAl10Fe3 cast copper alloy is used for important castings that require high strength, wear resistance, and corrosion resistance, such as copper sleeves, shaft sleeves, screw nuts, worm gears, and pipe fittings that work below 250°C.

Since the melting point of aluminum and iron in cast aluminum bronze is too large, the Al-Fe master alloy needs to be prefabricated to make its melting point close to the melting temperature of cast aluminum bronze, and lower the melting temperature of cast aluminum bronze. The order of feeding and melting is as follows: add passivated copper first, then heat up to 1150~1180℃ after clearing, then add back the charge and Al-Fe master alloy, continue to temperature to about 1200℃, adjust the copper liquid temperature after the furnace front process test is qualified After adding a small amount of Na3AlFe6 to clear the slag, it can be poured.

Our method of casting down nuts is centrifugal casting. The characteristic of centrifugal casting is that the molten metal fills and solidifies under the action of centrifugal force, the metal feeding effect is good, the outer structure of the casting is dense, the non-metallic inclusions are few, and the mechanical properties are good; no modeling and core making are needed, saving related materials and equipment Invest.

Through strict process control and reasonable process measures, our company has successfully cast a large number of pressed nuts. No casting defects were found after machining. Its chemical composition, mechanical properties and other indicators are in line with national standards and user requirements.

 The company also provides processing and casting of copper sleeves, copper tubes, copper tiles, copper slides, copper worm gears, copper nuts, graphite copper sleeves, and self-lubricating slides made of tin bronze, brass, and high-power brass. Customizations are welcome.

Scan the QR code to read on your phone

Service Hotline:

FAX:0537—4401368

Cell phone:13375371599    

E-mail:qfzxgk@163.com

QQ:2531928993 、2621161245  

Want want:qfmkgkpjjg

Address: Xiyuan 7th Road, Gongye 1st Road, West Economic Development Zone, Qufu City

Shandong Zhengxiang Industrial and Mining Equipment Co., Ltd.

Copyright © 2020  Shandong Zhengxiang Industrial and Mining Equipment Co., Ltd.  All Right Reserved  鲁ICP备19036021号-1