Cold rolling and annealing preparation method of high-tungsten high-cobalt nickel alloy ultra-fine grain panel

A technology of cold-rolling annealing and nickel alloy, which is applied in the field of cold-rolling annealing preparation of high-tungsten, high-cobalt-nickel alloy ultra-fine-grained sheets, can solve the problems of undiscovered cold-rolling annealing preparation method and grain uniformity control, and achieve microscopic Excellent results in tissue and macroscopic quality

Active Publication Date: 2019-10-29
UNIV OF SCI & TECH BEIJING
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no research on high-tungsten, high-cobalt-nickel alloys has been found in China...

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cold rolling and annealing preparation method of high-tungsten high-cobalt nickel alloy ultra-fine grain panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) An exemplary high-tungsten and high-cobalt nickel alloy for a drug-type mask contains, by mass percentage: 35% tungsten, 20% cobalt and the balance nickel.

[0026] 2) According to the element ratio of the alloy described in step 1), the raw materials are weighed, including: metal tungsten bar, metal cobalt plate and metal nickel plate. It was then melted in a vacuum induction furnace and cast into 25kg ingots.

[0027] 3) The ingot obtained in step 2) is homogenized, billeted, and hot-rolled, and then two passes of cold-rolled annealing are carried out, and the deformation of each pass is controlled at 30%. The time is 60 minutes, the annealing atmosphere is nitrogen, and the annealed sheet is air-cooled.

[0028] 4) The grain size is 8.5 grades, and the grain size difference is 1.5 grades;

[0029] 5) The elongation rate reaches 76%, and the tensile strength reaches 960MPa;

[0030] 6) The yield strength reaches 588MPa, which is 10.3% higher than the published d...

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

No PUM Login to view more

Abstract

The invention relates to a cold rolling and annealing preparation method of a high-tungsten high-cobalt nickel alloy ultra-fine grain panel, and belongs to the technical field of metal materials. An alloy is prepared from the components in percentage by weight: 25 to 45 percent of tungsten, 15 to 25 percent of cobalt, and the balance nickel and residual elements. The method comprises the preparation processes of adopting a cold rolling and annealing alternate repeating deformation path, wherein the cold-rolling deformation amount per pass is 20 to 45 percent, and the cold-rolling deformation amount of the last pass is larger than or equal to 25 percent; and annealing a panel veneer cold-rolled per pass in the middle, wherein the annealing temperature is 850 to 1100 DEG C, and the annealingtime is 30 to 150min. According to the cold rolling and annealing preparation method of the high-tungsten high-cobalt nickel alloy ultra-fine grain panel provided by the invention, the high-tungstenhigh-cobalt nickel alloy ultra-fine grain panel is prepared through a cold rolling and annealing way; and the obtained panel is uniform in deformation, has no defect such as surface cracks, has a tinyinner grain structure with the grain size grade being not lower than 7 grade, has an ideal microscopic structure and an excellent mechanical property in each direction, has a grain size grade difference not exceeding 2 grades, has the ductility reaching to 76 percent, the tensile strength reaching to 995MPa and the yield strength reaching to 588MPa, and is capable of meeting the requirements of multiple product production processes such as follow-up die forging, rocking-rolling, punching and spinning on the panel.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to a cold-rolling and annealing preparation method of a high-tungsten, high-cobalt-nickel alloy ultrafine-grain plate. Background technique [0002] The shaped-charge warhead is a penetrating body with center-of-mass velocity and structural shape that is forged through the concentrated-energy detonation of explosives to crush and deform the charge-type cover by using the charge principle, and the charge-type cover is lined with the In the concave cavity of the charge structure, it is compressed by the explosive detonation wave to form a special material part of the high-energy concentrated jet. Shaped jet has the characteristics of high energy density and strong directionality, and has a good ability to penetrate hard targets. It is widely used in military and civilian fields such as anti-armor weapon warheads, oil exploration, and penetrating buildings. [0003] Research ins...

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): C22F1/02C22F1/10
CPCC22F1/02C22F1/10
Inventor 郑磊赵鑫侯云辉杨宝良廖裕刚唐婧
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap