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

A kind of production technology of pressed alloy powder

A production process and technology of alloy powder, which is applied in the field of production process of pressing alloy powder, can solve problems such as blank cracks, compacted edges and corners, etc., and achieve the effects of enhanced strength, easy dewaxing, and good product quality

Active Publication Date: 2015-12-02
宜兴市炜华合金材料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to solve the problems of cracks in the pressed blank and edge drop of the compact in the production process of pressed alloy powder in the prior art

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
  • A kind of production technology of pressed alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Put 100kg of raw material powder into a high-performance ball mill and grind it to 100μm in a high-performance ball mill to prepare a pre-alloyed powder. Add 600g of stearic acid, 800g of paraffin and 100g of auxiliary additives to 0.2 liters. The temperature is 50°C and the density is 0.725g In the gasoline of / mol, add 1.5kg pre-alloyed forming agent in the pre-alloyed powder, add the pre-alloyed powder of forming agent, granulate in the mixing granulator, then pack into the tray, put into the oven, at 80 The drying time is 2 hours at ℃, and the dried alloy powder is pressed through a 40-mesh stainless steel screen twice.

[0022] A product of 104.8 kg was obtained by pressing, and the product yield was 91%. During the production process, cracks in the pressed blank and the phenomenon of edge and corner drop of the compact were greatly reduced.

Embodiment 2

[0024] Put 100kg of raw material powder into a high-performance ball mill and grind it to 150μm in a high-performance ball mill to prepare a pre-alloyed powder. Add 800g of stearic acid, 1kg of paraffin and 200g of auxiliary additives to 0.6 liters. The temperature is 60°C and the density is 0.725g / mol of gasoline, add 2kg of pre-alloyed molding agent to the pre-alloyed powder, add the pre-alloyed powder of the molding agent, granulate in the mixing granulator, then put it into the material tray, put it in the oven, and heat it at 100°C Down drying, the time is 7 hours, and the alloy powder after drying passes through 100 mesh stainless steel sieves three times, and then is pressed.

[0025] 109.3 kg of the product was obtained by pressing, and the product yield was 95%. During the production process, the cracks in the pressed blank and the phenomenon of edge and corner drop of the compact were greatly reduced.

Embodiment 3

[0027] Put 100kg of raw material powder into a high-performance ball mill, grind it to 200μm in a high-performance ball mill, and prepare a pre-alloyed powder. Add 1kg of stearic acid, 1.2kg of paraffin and 300g of auxiliary additives to 1 liter. The temperature is 70°C and the density is 0.725 In the gasoline of g / mol, add 2.5kg pre-alloyed forming agent in the pre-alloyed powder, add the pre-alloyed powder of forming agent, granulate in the mixing granulator, then pack into the material pan, put into the oven, in Dry at 120°C for 12 hours, and the dried alloy powder passes through a 160-mesh stainless steel screen five times before pressing.

[0028] 106.5 kg of the product was obtained by pressing, and the product yield was 92%. During the production process, the cracks in the pressed blank and the phenomenon of edge and corner drop of the compact were greatly reduced.

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 discloses production technology for pressing of alloyed powder. The production technology includes the steps: subjecting raw material powder to ball milling into pre-alloyed powder 100-200 micrometers in particle size; preparing a forming agent and adding the same into heated gasoline; mixing the gasoline with the dissolved forming agent and the pre-alloyed powder in a proportion of 3-5:150-200; stirring and pelletizing an obtained mixture prior to drying and sieving to obtain the alloyed powder; pressing the treated alloyed powder. The forming agent is a mixture of stearic acid, paraffin and a supplementary additive agent. Different from the prior art, the production technology for pressing of the alloyed powder has the advantages that adding of the forming agent and changing of ingredients of the forming agent enable the forming agent to be completely distributed in a product, so that pressing of the product is good in effect, dewaxing is facilitated, and the sintered product is good in quality.

Description

technical field [0001] The invention relates to a production process of powder metallurgy, in particular to a production process of pressing alloy powder. Background technique [0002] Powder metallurgy generally requires powder preparation, molding, mold removal, sintering and post-processing production processes. The preparation of pressed powder is an important step, and the quality of pressed powder determines the quality of pressed blank to a certain extent. The ginseng-exfoliating molding agent is not complete, and serious quality problems will occur during pressing, such as insufficient green compact strength, uneven green compact density, dropped edges and corners of the green compact, and so on. [0003] There are many methods of adding molding agent at present. The disadvantage is that the molding agent is not complete, which will cause insufficient compaction strength, uneven compaction density, resulting in problems such as cracks in the compacted blank, and edg...

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): B22F3/02B22F1/00
Inventor 李云峰谢欣杰申海宁
Owner 宜兴市炜华合金材料有限公司