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

Preparation method of large-scale molybdenum plate blank

A slab, large-scale technology, applied in the field of preparation of large-scale molybdenum slabs, can solve the problems of irregular size of molybdenum slabs, inability to produce large-scale molybdenum slabs, difficulty in demoulding, etc. Easy demoulding effect

Active Publication Date: 2014-12-24
JINDUICHENG MOLYBDENUM CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing large molybdenum slabs, which solves the problems that the prior art cannot produce large molybdenum slabs weighing more than 500 kg, the size of the molybdenum slabs is irregular, and the difficulty of demoulding is large

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
  • Preparation method of large-scale molybdenum plate blank
  • Preparation method of large-scale molybdenum plate blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The first step, the selection and treatment of molybdenum powder

[0031] Choose an average particle size of 4.5μm and a loose ratio of 1.3g / cm 3 The molybdenum powder is subjected to 325 mesh ultrasonic screening to remove small particles of molybdenum powder aggregates in the molybdenum powder. The volume of the sieve after sieving accounts for 6% of the total volume of the molybdenum powder before sieving;

[0032] The second step, powder

[0033] Place steel mold 1 vertically on the ground, the upper bottom of steel mold 1 is 820mm long, 110mm wide, the lower bottom is 816mm long, 110mm wide, and the height of steel mold 1 is 2200mm; Lift it to the top of the steel mold 1, wherein the upper bottom of the latex rubber mold 4 is 810mm long and 100mm wide, the lower bottom is 806mm long and 100mm wide, and the height of the latex rubber mold 4 is 2500mm; then slowly lower the latex rubber When the distance between the bottom of the latex rubber mold 4 and the bottom ...

Embodiment 2

[0043] The first step, the selection and treatment of molybdenum powder

[0044] Choose an average particle size of 4.2μm and a loose ratio of 1.28g / cm 3 The molybdenum powder is subjected to 325-mesh ultrasonic sieving to remove small particles of molybdenum powder aggregates in the molybdenum powder. The volume of the sieve after sieving accounts for 8% of the total volume of the molybdenum powder before sieving;

[0045] The second step, powder

[0046] Place steel mold 1 vertically on the ground, the upper bottom of steel mold 1 is 840mm long, 175mm wide, the lower bottom is 836mm long, 175mm wide, and the height of steel mold 1 is 1400mm; 4. Lift it to the top of the steel mold 1, wherein the upper bottom of the latex rubber mold 4 is 830mm long and 165mm wide, the lower bottom is 826mm long and 165mm wide, and the height of the latex rubber mold 4 is 1600mm; then slowly lower the latex rubber mold 4. When the distance between the bottom of the latex rubber mold 4 and t...

Embodiment 3

[0056] The first step, the selection and treatment of molybdenum powder

[0057] Choose an average particle size of 4.0μm and a loose ratio of 1.2g / cm 3 The molybdenum powder is subjected to 325-mesh ultrasonic sieving to remove small particles of molybdenum powder aggregates in the molybdenum powder. The volume of the sieve after sieving accounts for 7% of the total volume of the molybdenum powder before sieving;

[0058] The second step, powder

[0059] Place steel mold 1 vertically on the ground, the upper bottom of steel mold 1 is 820mm long, 110mm wide, the lower bottom is 816mm long, 110mm wide, and the height of steel mold 1 is 2200mm; Lift it to the top of the steel mold 1, wherein the upper bottom of the latex rubber mold 4 is 810mm long and 100mm wide, the lower bottom is 806mm long and 100mm wide, and the height of the latex rubber mold 4 is 2500mm; then slowly lower the latex rubber When the distance between the bottom of the latex rubber mold 4 and the bottom of...

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
particle sizeaaaaaaaaaa
heightaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a large-scale molybdenum plate blank. The preparation method of the large-scale molybdenum plate blank includes five steps: selecting and disposing, filling powder, pressing, demoulding and firing of molybdenum powder. A molybdenum plate blank with a thickness of 65 to 120 millimeters, a width of 500 to 600 millimeters, a length of 900 to 1500 millimeters and a weight more than 500 kilograms can be successfully produced. The molybdenum plate blank is neat in appearance, small in dimensional deviation, not prone to crazing after rolled and even in grain structure. Due to the fact that ultrasound screening is adopted in production process, powder mounding times are reduced, labor intensity is reduced, and production efficiency is improved. Meanwhile, due to the fact that a traditional rubber mold is replaced by soft latex mold, demoulding is enabled to be easy.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method for preparing a large molybdenum slab. Background technique [0002] At present, the specifications of the large molybdenum slabs prepared by the prior art are mainly 100-200 kg per unit weight, and the raw materials of the molybdenum slabs generally use pure molybdenum powder with an average Fischer particle size of 3.0-3.8 μm. The powder metallurgy method is used for production, and the production steps are as follows: first, design the steel mold and the rubber mold according to the regular size required by the product, quantitatively load the molybdenum powder into the mold, and measure the height of the molybdenum powder every time about 20% of the molybdenum powder is loaded. , if the powder filling height of the molybdenum powder exceeds the calculated value, it is necessary to artificially pier the powder, reduce the height of the molybde...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/16
Inventor 曹维成黄晓玲张焜史振琦薛夏英葛宽余白秋平何晓红王岗吴亚利
Owner JINDUICHENG MOLYBDENUM CO LTD