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Flower combing needle bar holding element in powder metallurgy warp knitting machine and preparation process thereof

A technology of retaining elements and powder metallurgy, applied in warp knitting, metal processing equipment, knitting, etc., can solve the problems of poor fatigue resistance, high manufacturing cost, short life, etc., achieve excellent toughness and strength, and high raw material utilization rate , the effect of structural improvement

Active Publication Date: 2017-11-21
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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  • Flower combing needle bar holding element in powder metallurgy warp knitting machine and preparation process thereof
  • Flower combing needle bar holding element in powder metallurgy warp knitting machine and preparation process thereof

Examples

Experimental program
Comparison scheme
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 a green 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 con...

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Abstract

The invention provides a flower combing needle bar holding element in a powder metallurgy warp knitting machine and a preparation process thereof, which belong to the technical field of textile equipment elements and powder metallurgy. The flower combing needle bar holding element in the powder metallurgy warp knitting machine adopts the technical scheme that the flower combing needle bar holding element is prepared from the following components in parts by mass: 85 to 97 parts of iron powder, 0.15 to 0.6 part of graphite powder, 0.4 to 1 part of lubricating agent, 2 to 6 parts of copper powder, 1 to 4 parts of nickel powder, 0.5 to 1.5 parts of cobalt powder and 1 to 3 parts of molybdenum powder. The flower combing needle bar holding element has the beneficial effects that the flower combing needle bar holding element is prepared by using a powder metallurgical process, so that the utilization rate of raw materials is high, and the production cost is greatly reduced; the anti-fatigue performance, toughness and strength of the holding element are excellent, and the service life is more than 10 times that of an existing holding element; the production process is simple, the manpower and labor intensity is greatly reduced, and automatic mass production is easy to implement; and the structure of the holding element is improved, so that the weaving efficiency is improved.

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 Applications(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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