CN106222365A - A kind of Wear-resistant Treatment technique improving transmission line hardware - Google Patents
A kind of Wear-resistant Treatment technique improving transmission line hardware Download PDFInfo
- Publication number
- CN106222365A CN106222365A CN201610699042.8A CN201610699042A CN106222365A CN 106222365 A CN106222365 A CN 106222365A CN 201610699042 A CN201610699042 A CN 201610699042A CN 106222365 A CN106222365 A CN 106222365A
- Authority
- CN
- China
- Prior art keywords
- gold utensil
- wear
- transmission line
- utensil part
- line hardware
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/08—Surface hardening with flames
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
- C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A kind of Wear-resistant Treatment technique improving transmission line hardware, belong to the technical field of surface of material, gold utensil part first need wear-resisting being under flammable flame spray head move formula heating, cool down putting in water or oil after the heating of gold utensil part local again, then the gold utensil part after quenching is carried out lonneal.Using the inventive method can form hardened layer in transmission line hardware local surfaces, case hardness can be improved to more than 50HRC by below 30HRC, and gold utensil part local surfaces wearability improves.This technique is simple, can effectively improve case hardness and the wearability of transmission line hardware, it is ensured that the reliability that gold utensil uses, and increases the service life, can ensure the dependability of transmission line hardware.
Description
Technical field
The invention belongs to the technical field of surface of material, the surface being specifically related to power industry transmission line hardware is resistance to
Grinding process.
Background technology
The steel such as 35#, 45#, 40Cr, 35CrMo and malleable cast iron (pearlite iron) are the conventional systems of transmission line hardware
Producing material material, air cooling, normalizing, quenched or as cast condition use, the transmission line hardware case hardness manufactured due to these materials after forging
Relatively low, anti-wear performance is poor, and during use, local surfaces easily produces abrasion, causes reduce the service life of gold utensil, maintenance
Cycle time, transmission line of electricity dependability declines, and operation expense raises, and affects power network safety operation and reliable confession
Electricity.
Flame hardening is that surface of the work is quickly heated by the flame utilizing imflammable gas to produce, and the most quickly cools down, makes
Hard heat treatment is martensite, and heart portion remains as original tissue.By flame hardening, surface of the work hardness, anti-wear performance are aobvious
The raising write, and heart portion still keeps the performance that originally required.
Summary of the invention
It is an object of the invention to provide the steel such as a kind of 35#, 45#, 40Cr, 35CrMo and malleable cast iron (pearlitic casting
Ferrum) etc. transmission line hardware shorterizing method, it is intended to solve the problem that wears no resistance of transmission line hardware.
The present invention comprises the following steps that:
1) gold utensil part local heating: gold utensil part needs wear-resisting being under flammable flame spray head move formula heating；
2) quenching: cool down putting in water or oil after the heating of gold utensil part local；
3) tempering: the gold utensil part after quenching is carried out lonneal.
Lonneal should be carried out immediately after present invention quenching, to reduce residual stress and fragility, and not reduce high hard as far as possible
Degree.
The present invention is at transmission line of electricity gold such as the steel such as 35#, 45#, 40Cr, 35CrMo and malleable cast iron (pearlite iron)
Tool local surfaces forms hardened layer, and case hardness can be improved to more than 50HRC by below 30HRC, and gold utensil part local surfaces is wear-resisting
Property improve.This technique is simple, can effectively improve case hardness and the wearability of transmission line hardware, it is ensured that gold utensil uses
Reliability, increases the service life, and can ensure the dependability of transmission line hardware.
It addition, the quenching temperature of gold utensil part of the present invention is 900～1000 DEG C.Flame-hardened firing rate is relatively
Hurry up, quenching temperature is also much higher compared with normal quenching, typically in institute's quenching workpiece materials A c3More than+100 DEG C.Temperature is too low,
Quenching effect is bad, and temperature is too high, then crystal grain can be the thickest.
The flame flame core distance away from gold utensil part surface is 1～3mm.So can obtain more uniform zone of heating, higher adds
Heating rate.
During described quenching, the temperature of water or oil is 10～25 DEG C.The too low easy hardening crack of water temperature, too high quenching hardness can reduce.
Generally, when gold utensil part material is carbon steel, with water cooling；When gold utensil part material is steel alloy, with oil cooling.
Described low tempering temperatures is 180～200 DEG C.Lonneal can with quenching stress and fragility, and keep higher
Hardness.
Detailed description of the invention
Embodiment one: the flame hardening technique of a kind of 45# steel socket-clevis eye, comprises the following steps that:
1) local heating: easy to wear for socket-clevis eye being under 900 DEG C of flammable flame spray heads is carried out heat treated, flame flame core
Distance away from gold utensil part surface is about 1～3mm, and rate of flame travel is about 100mm/min.
2) quenching: put into after heating in 15-20 DEG C of water and cool down.
3) tempering: the socket-clevis eye after the surface hardening of local is carried out the tempering of 180 DEG C.
After this socket-clevis eye is thermally treated, at flame hardening, surface metallographic structure is tempered martensite, and heart portion is original
Tissue (ferrite+pearlite or tempered sorbite), case hardness is more than 50HRC.
Embodiment two: the flame hardening technique of a kind of 40Cr steel U-shaped link part, comprises the following steps that:
1) local heating: easy to wear for U-shaped link being under 920 DEG C of flammable flame spray heads is carried out heat treated, flame flame core
Distance away from gold utensil part surface is about 2mm, and rate of flame travel is about 50mm/min.
2) quenching: being put into after heating in oil and cool down, oil temperature is 20～25 DEG C.
3) tempering: the U-shaped link after the surface hardening of local is carried out the tempering of 200 DEG C.
After this U-shaped link is thermally treated, at flame hardening, surface metallographic structure is tempered martensite, and heart portion is original group
Knitting (tempered sorbite), case hardness is more than 50HRC.
Embodiment three: the flame hardening technique of a kind of pearlite iron overhanging golden tool, comprises the following steps that:
1) local heating: easy to wear for overhanging golden tool being under 1000 DEG C of flammable flame spray heads is carried out heat treated, flame flame
The heart distance away from gold utensil part surface is about 2mm, and rate of flame travel is about 50mm/min.
2) quenching: put into after heating in 10～20 DEG C of oil and cool down.
3) tempering: the overhanging golden tool after the surface hardening of local is carried out the tempering of 190 DEG C.
After this hanging gold utensil is thermally treated, at flame hardening, surface metallographic structure is tempered martensite+temper carbon,
Heart portion is original structure (pearlite+temper carbon), and case hardness is more than 50HRC.
Claims (5)
1. the Wear-resistant Treatment technique improving transmission line hardware, it is characterised in that comprise the steps:
1) gold utensil part local heating: gold utensil part needs wear-resisting being under flammable flame spray head move formula heating；
2) quenching: cool down putting in water or oil after the heating of gold utensil part local；
3) tempering: the gold utensil part after quenching is carried out lonneal.
Wear-resistant Treatment technique the most according to claim 1, it is characterised in that the quenching temperature of described gold utensil part be 900～
1000℃。
Wear-resistant Treatment technique the most according to claim 1, it is characterised in that the flame flame core distance away from gold utensil part surface be 1～
3mm。
Wear-resistant Treatment technique the most according to claim 1, it is characterised in that during described quenching, the temperature of water or oil is 10～25
℃。
Wear-resistant Treatment technique the most according to claim 1, it is characterised in that described low tempering temperatures is 180～200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699042.8A CN106222365A (en) | 2016-08-22 | 2016-08-22 | A kind of Wear-resistant Treatment technique improving transmission line hardware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699042.8A CN106222365A (en) | 2016-08-22 | 2016-08-22 | A kind of Wear-resistant Treatment technique improving transmission line hardware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106222365A true CN106222365A (en) | 2016-12-14 |
Family
ID=57554153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610699042.8A Pending CN106222365A (en) | 2016-08-22 | 2016-08-22 | A kind of Wear-resistant Treatment technique improving transmission line hardware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106222365A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801213A (en) * | 2017-01-23 | 2017-06-06 | 扬州大学 | A kind of high-performance abrasion-proof transmission line hardware and its Technology for Heating Processing |
| CN106801117A (en) * | 2017-01-23 | 2017-06-06 | 扬州大学 | A kind of high-strength tenacity transmission line hardware and its Technology for Heating Processing |
| CN106939400A (en) * | 2017-04-19 | 2017-07-11 | 安徽固齐线路器材有限公司 | A kind of heat spraying method for being used to improve transmission line of electricity overhanging golden tool wearability |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2445678A1 (en) * | 1974-09-25 | 1976-04-08 | Vinzenz Siller | DEVICE FOR SURFACE HARDENING BY LOCAL HEATING OF THE INNER EDGE LAYERS OF PIPE ELBOWS |
| CN102329924A (en) * | 2011-09-07 | 2012-01-25 | 王锡林 | Surface treatment method of guide rail of elevator |
| CN102418179A (en) * | 2011-09-26 | 2012-04-18 | 吴江伊兰吉纺织品有限公司 | Novel wear-resistant steel traveler |
| CN105648154A (en) * | 2014-11-14 | 2016-06-08 | 重庆麦卡瑞机械制造有限公司 | Flame quenching technique |
-
2016
- 2016-08-22 CN CN201610699042.8A patent/CN106222365A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2445678A1 (en) * | 1974-09-25 | 1976-04-08 | Vinzenz Siller | DEVICE FOR SURFACE HARDENING BY LOCAL HEATING OF THE INNER EDGE LAYERS OF PIPE ELBOWS |
| CN102329924A (en) * | 2011-09-07 | 2012-01-25 | 王锡林 | Surface treatment method of guide rail of elevator |
| CN102418179A (en) * | 2011-09-26 | 2012-04-18 | 吴江伊兰吉纺织品有限公司 | Novel wear-resistant steel traveler |
| CN105648154A (en) * | 2014-11-14 | 2016-06-08 | 重庆麦卡瑞机械制造有限公司 | Flame quenching technique |
Non-Patent Citations (1)
| Title |
|---|
| 马国亭: "模具表面火焰淬火技术", 《模具制造》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801213A (en) * | 2017-01-23 | 2017-06-06 | 扬州大学 | A kind of high-performance abrasion-proof transmission line hardware and its Technology for Heating Processing |
| CN106801117A (en) * | 2017-01-23 | 2017-06-06 | 扬州大学 | A kind of high-strength tenacity transmission line hardware and its Technology for Heating Processing |
| CN106801117B (en) * | 2017-01-23 | 2019-04-09 | 扬州大学 | A kind of high-strength tenacity transmission line hardware and its heat treatment process |
| CN106939400A (en) * | 2017-04-19 | 2017-07-11 | 安徽固齐线路器材有限公司 | A kind of heat spraying method for being used to improve transmission line of electricity overhanging golden tool wearability |
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