Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method for tungsten-nickel alloy with abrasion-resistant and corrosion-resistant coating

A tungsten-nickel alloy and coating technology, which is applied in the field of alloy material manufacturing, can solve the problems of "nickel pool" and holes, and achieve the effect of improving load-bearing and anti-wear capacity, reducing residual stress and increasing deposition thickness.

Inactive Publication Date: 2016-11-16
SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing a tungsten-nickel alloy with a wear-resistant and corrosion-resistant coating. The tungsten-nickel alloy prepared by the method solves the problems of "nickel pools" and holes that often occur in the preparation process of traditional fine-grained hard alloys, so as to improve The comprehensive properties of the alloy, the multi-layer gradient coating structure is adopted, and the coating composition is gradually transitioned from Cr to CrN through CrN, which not only reduces the coating grain size and residual stress in the lattice, but also increases the deposition thickness of the film , thereby greatly improving the load-bearing and anti-wear capabilities of the coating

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare mixed powder according to the following weight components:

[0029] Tungsten carbide, 90.1%, Fischer particle size 0.8-1μm;

[0030] Nickel powder, 5%, Fischer particle size 0.5-1.0μm;

[0031] Chromium carbide, balance.

[0032] The mixed powder with the above ratio is wet-milled; the ball milling time is controlled in sections; firstly, the carbide powder and the additive chromium carbide are added to the ball mill barrel for wet milling for 12 hours, and then nickel powder is added for wet milling for 14 hours.

[0033] The ball milled mixture slurry was dried.

[0034] The dry mix is ​​pressed into compacts of the desired shape.

[0035] The pressed product is sintered at high temperature in a sintering furnace, the sintering temperature is 1450°C, the holding time is 70-90min, and the sintering pressure is 4.5Mpa to obtain a tungsten-nickel alloy matrix.

[0036] Substrate pretreatment. The substrate pretreatment may be followed by grinding and polishin...

Embodiment 2

[0040] Prepare mixed powder according to the following weight components:

[0041] Tungsten carbide, 92.8%, Fischer particle size 0.8-1μm;

[0042] Nickel powder, 6%, Fischer particle size 0.5-1.0μm;

[0043] Chromium carbide, balance.

[0044] The mixed powder with the above ratio is wet-milled; the ball milling time is controlled in sections; firstly, the carbide powder and the additive chromium carbide are added to the ball mill barrel for wet milling for 16 hours, and then nickel powder is added for wet milling for 18 hours.

[0045] The ball milled mixture slurry was dried.

[0046] The dry mix is ​​pressed into compacts of the desired shape.

[0047] The pressed product was sintered at high temperature in a sintering furnace, the sintering temperature was 1470°C, the holding time was 90min, and the sintering pressure was 5.0Mpa to obtain a tungsten-nickel alloy matrix.

[0048] Prepare cladding metal powder according to the following weight percentage: Zr 15%, Ni 8%,...

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

PUM

PropertyMeasurementUnit
Fisherman's particle sizeaaaaaaaaaa
Fisherman's particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method for tungsten-nickel alloy with an abrasion-resistant and corrosion-resistant coating. According to the tungsten-nickel alloy prepared through the method, the problem of 'nickel pools' and holes frequently occurring in a traditional preparation process of fine-grain cemented carbide is solved, and the comprehensive performance of the alloy is improved. A multi-gradient coating structure is adopted, the components of the coating transit from Cr and CrN to CrAlSiN gradually, the coating grain size and residual stress in crystal lattices are reduced, the deposition thickness of a film is improved, and therefore the bearing capacity and abrasion resistance of the coating are greatly improved.

Description

technical field [0001] The invention relates to the field of alloy material manufacturing, in particular to a method for preparing a tungsten-nickel alloy with a wear-resistant and corrosion-resistant coating. Background technique [0002] Cemented carbide has the characteristics of high strength, high hardness, excellent wear resistance, heat resistance and good corrosion resistance, so it is widely used in high pressure, high speed, high temperature, corrosive media and other working environments [0003] WC-Ni cemented carbide has the characteristics of high strength, high hardness, excellent wear resistance, heat resistance and good corrosion resistance, so it is widely used in high pressure, high speed, high temperature, corrosive medium and other working environments. Since Ni belongs to the face-centered cubic (F.c.c) crystal system, it has good plasticity and is prone to plastic deformation during wet grinding to form flaky Ni powder clusters. The industrial product...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C14/34C23C14/16C23C14/06C23C14/02
CPCC23C14/3464C23C14/0084C23C14/022C23C14/028C23C14/0641C23C14/165
Inventor 不公告发明人
Owner SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD