Bimetallic metallurgical composite wear-resisting tube blank and manufacturing method thereof

A production method and technology for wear-resistant pipes, which are applied in the field of metal casting and can solve the problems of high melting point slag, low shear strength, inclusions and slag inclusions, etc.
CN101774010BInactive Publication Date: 2011-08-31HANDAN XINXING SPECIAL TUBING CO LTD
1 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANDAN XINXING SPECIAL TUBING CO LTD
Publication Date
2011-08-31
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for manufacturing a bimetallic metallurgical composite wear-resisting tube blank, which comprises the following steps: firstly, spraying a water-based zircon powder coating onto a metal tube die after being baked to between 200 and 300 DEG C, wherein the spraying thickness is 1.0 to 3.0mm; secondly, centrifugally casting external liquid metal on the metal tube dieafter being baked to between 200 and 350 DEG C, cooling the metal tube die after casting, beginning to cast internal liquid metal into the metal tube die when an internal surface temperature of the outer layer is cooled to a temperature lower than a solidus temperature of the external metal; and finally, pouring the internal liquid metal into the metal tube die for centrifugal casting, cooling the metal tube die after casting, and stopping cooling when the outer layer and the inner layer are completely solidified, then the outer layer and the inner layer are metallurgically fused completely, wherein the outer layer is made of a plain carbon steel material or a low-alloy high-strength steel material and the inner layer is made of a high-chromium white cast iron material. The invention alsodiscloses the bimetallic metallurgical composite wear-resisting tube blank manufactured by the method. The outer-layer metal and the inner-layer metal of the tube blank manufactured by the method canbe metallurgically fused completely; the qualification rate is improved; and the use safety is high.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of metal casting and molding, in particular to a bimetallic metallurgical composite wear-resistant tube blank and a production method thereof. Background technique

[0002] X / high chromium white cast iron bimetallic composite pipes are mainly used in mining industries such as coal mines, gold mines, copper mines, iron ores, phosphate mines, and potassium sulfate mines, as well as pipes for conveying solid materials. Among them, X refers to ordinary carbon steel or low-alloy high-strength steel materials, such as 14MnV, 16MnV; high-chromium white cast iron is wear-resistant white cast iron alloy materials (such as KmTBCr20Mo2Cu1, KmTBCr26 and other steel grades in GB8263-87), according to the use Depending on the requirements, its composition can be adjusted appropriately. This material is generally used for wearing parts in mining, metallurgy, electric power, building materials and machinery industries. At present, t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More