Copper alloy protective nut and manufacturing method thereof

A technology for protecting nuts and a manufacturing method, applied in the field of alloys, can solve problems such as affecting production efficiency and poor metal fatigue, and achieve the effects of reducing section shrinkage rate and derivative rate, increasing strength, and increasing tensile strength

Active Publication Date: 2017-04-05
ZHEJIANG PENGCHENG TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the nuts manufactured by domestic manufacturers mainly use common alloy materials such as 40Cr, 30CrNiMoA, 40CrNiMoA, and 42CrMo. The materials are heat-treated during production to ensure that they will not crack or break during the normal rolling process, but the metal fatigue is relatively high. Poor, after 3-5 months of use, cracking occurs one after another. After being subjected to cold steel, blackhead steel is not easy to break to protect rolling facilities such as rollers, resulting in accidents such as burning shafts, burning oil film bearings, and broken shafts. , leading to the high-speed rolling stoppage, seriously affecting the production efficiency, it can only be applied to the rolling mill below 65m / s, and only suitable for the rolling area with a minimum of 2mm

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present invention provides a copper alloy protective nut, comprising in percentage by weight: 55% Cu, 6% Al, 4% Mn, 1% Co, 0.6% Pb, 0.005% B, The balance is Zn.

[0026] The manufacturing method of the copper alloy protective nut includes the following steps:

[0027] (1) Take the percentage by weight: 55% of Cu, 6% of Al, 4% of Mn, 1% of Co, 0.6% of Pb, 0.005% of B, the balance is Zn, in 735 1.5h~3h annealing and normalizing treatment at ℃;

[0028] (2). Take out the alloy material in step (1) into the blank for extrusion molding;

[0029] (3) The formed product of step (2) is processed by driving and milling to make a finished product.

[0030] Said step (1) also includes content by weight percentage: 0.04% Ti, 0.06% Zr.

[0031] The hardness of the processed alloy in the step (1) is 220HRB±10, and the tensile strength reaches 740Mpa±2%.

[0032] By adopting the above-mentioned ratio and method, the reduction of area of ​​the product is reduced, the tensile strength of the ...

Embodiment 2

[0034] A copper alloy protective nut, comprising in percentage by weight: 60% Cu, 4.2% Al, 6% Mn, 0.8% Co, 0.6% Pb, 0.005% B, 0.04% Ti , 0.06% of Zr, the balance is Zn.

[0035] The manufacturing method of the copper alloy protective nut includes the following steps:

[0036] (1) Take the percentage by weight: 55% Cu, 6% Al, 4% Mn, 1% Co, 0.6% Pb, 0.005% B, 0.04% Ti, 0.06% Zr, the balance is Zn, annealing and normalizing treatment at 735℃ for 1.5h~3h;

[0037] (2). Take out the alloy material in step (1) into the blank for extrusion molding;

[0038] (3) The formed product of step (2) is processed by driving and milling to make a finished product.

[0039] The hardness of the processed alloy in the step (1) is 220HRB±10, and the tensile strength reaches 740Mpa±2%.

[0040] Such a ratio not only has the advantages of Example 1, on the one hand, it enhances the anti-fading ability of the alloy, thereby reducing the reduction of area and derivation rate, and on the other hand, it can enha...

Embodiment 3

[0042] A copper alloy protective nut, comprising in percentage by weight: 55% Cu, 6% Al, 4% Mn, 1% Co, 0.6% Pb, 0.005% B, 0.04% Ti , 0.06% of Zr, the balance is Zn.

[0043] The manufacturing method of the copper alloy protective nut includes the following steps:

[0044] (1) Take the percentage by weight: 55% Cu, 6% Al, 4% Mn, 1% Co, 0.6% Pb, 0.005% B, 0.04% Ti, 0.06% Zr, the balance is Zn, annealing and normalizing treatment at 735℃ for 1.5h~3h;

[0045] (2). Take out the alloy material in step (1) into the blank for extrusion molding;

[0046] (3) The formed product of step (2) is processed by driving and milling to make a finished product.

[0047] The hardness of the processed alloy in the step (1) is 220HRB±10, and the tensile strength reaches 740Mpa±2%.

[0048] The above-mentioned ratio and method also have stable work in normal times, and break immediately when encountering a critical value, which protects the machine and has high safety.

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
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a copper alloy protection nut. The copper alloy protection nut comprises the following components in percentage by weight: 55-60% of Cu, 4-6% of Al, 2.5-4% of Mn, 0.6-1% of Co, 0.6% of Pb, 0.005% of B, and the balance of Zn. The invention further discloses a manufacturing method of the copper alloy protection nut. The copper alloy protection nut has such advantages as high bearing pressure, capability of automatically breaking to protect a roller box, prevention of burning an oil film bearing, high safety and convenience for use.

Description

Technical field [0001] The invention relates to alloy technology, in particular to a copper alloy protective nut and a manufacturing method thereof. Background technique [0002] With the progress of my country's steel rolling technology and the improvement of equipment level, the production line of wire and bar material has gradually moved towards continuous, automated, and efficient production, and its requirements for the stability of high-speed rolling lines have become higher and higher. The 65M / S can no longer meet the more efficient rolling efficiency. Especially for the production line of hot-rolled ribbed steel bars, the finished frame has higher requirements for the higher rolling resistance of the roll box. At present, the use of the roll box in the finishing mill basically depends on imported manufacturers. The box and its accessories often fail to meet the rolling torque transmission conditions due to alloy materials, heat treatment process and other problems during ...

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): C22C9/04C22F1/08B23P15/00
Inventor 何耀耀王勇伟
Owner ZHEJIANG PENGCHENG TECH
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