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A powder metallurgy warp knitting machine needle bar retaining element and its preparation process

A technology of powder metallurgy and retaining components, which is applied in warp knitting, metal processing equipment, knitting, etc., can solve the problems of short life, poor fatigue resistance, high production cost, etc., achieve excellent toughness and strength, reduce pattern defects, The effect of high raw material utilization

Active Publication Date: 2019-07-23
JINGSHI POWDER METALLURGY MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of high preparation cost, poor anti-fatigue performance and short service life of the existing flower comb needle bar retaining element, the present invention provides a flower comb needle bar retaining element in a powder metallurgy warp knitting machine and its preparation process, through Scientific selection of metal powder and reasonable proportioning, and further use of powder metallurgy technology, through molding, segmental sintering and other treatments, have achieved high efficiency, low cost, mass production of flower comb needle bar holding elements, and the obtained products have excellent fatigue resistance. long life

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
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  • A powder metallurgy warp knitting machine needle bar retaining element and its preparation process
  • A powder metallurgy warp knitting machine needle bar retaining element and its preparation process
  • A powder metallurgy warp knitting machine needle bar retaining element and its preparation process

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Experimental program
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Effect test

Embodiment 1

[0031]According to the ratio 1 in Table 1, the raw materials were weighed respectively, iron powder, copper powder, nickel powder, cobalt powder, molybdenum powder, graphite powder, and lubricant were added to the mixer and mixed for 50 minutes, and then left to stand for 48 hours after mixing, so that The components are sufficiently stable to prevent the segregation of alloy elements during the feeding process, and the mixed powder is obtained; the mixed powder is transported to the hopper of the press, and the mixed powder material is sent into the mold cavity through the automatic feeding mechanism of the press, and the feeding is controlled. The volume of the mixed powder in the mold cavity is 2.2 times the volume of the finished product, and it is pressed for 2 seconds under a pressure of 580 MPa to obtain a green compact;

[0032] Send the compact into the mesh belt sintering furnace, and pass in the protective gas. The protective gas consists of 70% nitrogen and 30% hydr...

Embodiment 2

[0037] According to the ratio 2 in Table 1, the raw materials were weighed respectively, and iron powder, copper powder, nickel powder, cobalt powder, molybdenum powder, graphite powder, and lubricant were added to the mixer and mixed for 60 minutes in turn, and then left to stand for 60 hours after mixing, so that The components are sufficiently stable to obtain mixed powder; the mixed powder is transported to the hopper of the press, and the mixed powder material is sent into the mold cavity through the automatic feeding mechanism of the press, and the volume of the mixed powder sent into the mold cavity is controlled to be the volume of the finished product 2.5 times of , press molding under 630MPa pressure for 3s to obtain a green compact;

[0038] Send the compact into the mesh belt sintering furnace, and pass in the protective gas. The protective gas consists of 70% nitrogen and 30% hydrogen, and the intake volume of nitrogen is 6m 3 / h, the inlet pressure is 0.12MPa, th...

Embodiment 3

[0042] According to the ratio 1 in Table 4, the raw materials were weighed respectively, iron powder, copper powder, nickel powder, cobalt powder, molybdenum powder, graphite powder, and lubricant were added to the mixer and mixed for 50 minutes, and then left to stand for 72 hours after mixing, so that The components are sufficiently stable to obtain mixed powder; the mixed powder is transported to the hopper of the press, and the mixed powder material is sent into the mold cavity through the automatic feeding mechanism of the press, and the volume of the mixed powder sent into the mold cavity is controlled to be the volume of the finished product 2.1 times of , press molding under 580MPa pressure for 2s to obtain compact;

[0043] Send the compact into the mesh belt sintering furnace, and pass in the protective gas. The protective gas consists of 70% nitrogen and 30% hydrogen, and the intake volume of nitrogen is 6m 3 / h, the inlet pressure is 0.12MPa, the oxygen content of ...

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Abstract

The invention provides a powder metallurgy warp knitting machine mid-floor comb needle rod retaining element and its preparation process, which belongs to the field of textile equipment components and powder metallurgy technology. The technical solution adopted is a powder metallurgy warp knitting machine mid-floor comb needle Rod holding element, its raw material is composed of the following components by mass: 85-97 parts of iron powder, 0.15-0.6 parts of graphite powder, 0.4-1 part of lubricant, 2-6 parts of copper powder, 1-4 parts of nickel powder, 0.5-1.5 parts of cobalt powder and 1-3 parts of molybdenum powder. The beneficial effects are: the present invention uses powder metallurgy technology to prepare the retaining element of the needle bar of the comb needle, the utilization rate of raw materials is high, and the production cost is greatly reduced; the retaining element has excellent fatigue resistance, toughness and strength, and its service life is 10 times that of the existing retaining element. times; the production process is simple, which greatly reduces manpower and labor intensity, and is easy to automate and mass-produce; the structure of the holding element is improved to improve the efficiency of textile work.

Description

technical field [0001] The invention relates to the technical fields of textile equipment components and powder metallurgy, in particular to a needle rod retaining component for flower comb needles in a powder metallurgy warp knitting machine and a preparation process thereof. Background technique [0002] Powder metallurgy is a process technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. It has the advantages of energy saving, material saving, With the advantages of excellent performance, high product precision, good quality stability, and high and low emissions, it has been widely used in machinery manufacturing, aerospace and other fields. [0003] A warp knitting machine capable of weaving complex patterns is equipped with a ground bar for weaving the ground weave of the fabric and a pattern b...

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
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/16C22C38/08C22C38/10C22C38/12C22C33/02B22F1/00D04B27/24
CPCC22C33/0257C22C38/105C22C38/12C22C38/16D04B27/24B22F2998/10B22F1/10B22F3/24B22F3/1035B22F3/02
Inventor 蓝楷
Owner JINGSHI POWDER METALLURGY MFR
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