CN106893852A - The rolling bearing manufactured using special thermal treatment technique - Google Patents

The rolling bearing manufactured using special thermal treatment technique Download PDF

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Publication number
CN106893852A
CN106893852A CN201510956949.3A CN201510956949A CN106893852A CN 106893852 A CN106893852 A CN 106893852A CN 201510956949 A CN201510956949 A CN 201510956949A CN 106893852 A CN106893852 A CN 106893852A
Authority
CN
China
Prior art keywords
outer ring
bearing
heating
heat
technology
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
Application number
CN201510956949.3A
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Chinese (zh)
Inventor
张瑞仙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG TIANFUFEI WEAVING MATERIALS CO Ltd
Original Assignee
SHANDONG TIANFUFEI WEAVING MATERIALS CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHANDONG TIANFUFEI WEAVING MATERIALS CO Ltd filed Critical SHANDONG TIANFUFEI WEAVING MATERIALS CO Ltd
Priority to CN201510956949.3A priority Critical patent/CN106893852A/en
Publication of CN106893852A publication Critical patent/CN106893852A/en
Pending legal-status Critical Current

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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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • 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
    • 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
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/60—Ferrous alloys, e.g. steel alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a kind of Technology for Heating Processing of rolling bearing of mechanical manufacturing field, this Technology for Heating Processing is mainly for the bearing parts outer ring being made up of medium carbon steel (such as 55# or 60#) or bearing steel, quench to realize special thermal treatment requirement by high frequency or heating in medium frequency, method of the heat treatment using quenching twice, Technology for Heating Processing is comprised the following steps：Bulk heat treatmet, induction heat treatment and tempering stabilizing tissue, to improve the intensity of the main stress wear surface raceway of bearing, outer ring raceway is locally heat-treated, for the bearing for bearing axially loaded, outer ring raceway and an end face can be simultaneously heat-treated, improve the compression strength and rolling contact fatigue life of rubbing surface.The present invention has product quality high, process is simple and low cost and other advantages.

Description

The rolling bearing manufactured using special thermal treatment technique
Technical field
The present invention relates to a kind of bearing mnanufacture technique, specifically, the present invention relates to a kind of medium carbon steel or bearing Steel shaft bearing outer-ring Technology for Heating Processing.
Technical background
Bearing is the drive disk assembly commonly used in industrial equipment field, is widely used in various equipment, according to should With the difference of occasion, bearing should be with spies such as long-life, high accuracy, high rigidity, low noise, high-wearing features Property, in construction machinery industry, such as fork truck, stacker and excavator plant equipment, also require to withstand shocks Load.The present invention is the particular/special requirement for answering these industries, and a kind of roller bearing of exploitation is employed during manufacture Special Technology for Heating Processing, makes the roller surface of bearing outer ring and an end face have high rigidity, resistance to ensure Mill property and radial and axial bearing capacity, and center portion and outer diameter face are softs, both ensure that toughness, Can prevent outer diameter face from injuring friction track again.The progressive formation of hardness makes bearing have buffer capacity when being hit Power.The project finds that more preferably effect can be reached instead of bearing steel production using medium carbon steel in research process, Not only meet the requirement of client but also reduce cost.
The content of the invention
The present invention is to overcome the deficiencies in the prior art, there is provided a kind of process is simple, the axis of rolling of low production cost The Technology for Heating Processing held.
The present invention is achieved by the following technical solutions：
A kind of Technology for Heating Processing of rolling bearing, the rolling bearing includes outer ring, inner ring, rolling element and guarantor Frame is held, rolling element is steel ball or roller, and described Technology for Heating Processing is local heat treatmet, and heat processing unit is Outer ring, Technology for Heating Processing is comprised the following steps：
(1) bulk heat treatmet is quenched
Bearing outer ring first modifier treatment in heating furnace, temperature is 500-550 DEG C；Reach technology effect Really：Bearing outer ring integral hardness HRC25-40, obtains tempered sorbite；
(2) induction heat treatment
Heat treatment object：Outer ring raceway or raceway and cycle surface
The mode of heating of induction heat treatment is heated for electromagnetic induction local surfaces, and induction loop is pressed close to outside bearing Circle inwall or end face, the profile of induction loop are consistent with bearing outer ring inwall raceway or end face, according to product The requirement of product case depth selects the high frequency electric source of corresponding frequencies, is passed through high frequency electric to induction coil, externally Circle raceway or end face carry out sensing heating, and after heating certain hour reaches hardening heat, bearing outer ring falls immediately Enter cooling in hardening media, by adjusting heat time, air cooling time (heat transfer time) and output work Relation between rate controls the depth of quench-hardened case and transition zone；Hardened layer hardness ＞ HRC58, from raceway to Outer depth 2-4mm；Transition region 4-6mm；
(3) tempering stabilizing tissue
After bearing outer ring impewdance matching, tempering, stabilizing tissue in time.
Heating source uses electromagnetic induction heating, and high frequency, superaudio or intermediate frequency power supply pass through electromagnetic induction coil pair Raceway carries out local heating in the outer ring of bearing, and electromagnetic induction heating is easy to temperature control to adjust.
Compared with prior art, the present invention has following beneficial effect：Product quality is high；Process is simple；Cost It is low.
Specific embodiment
A kind of Technology for Heating Processing of rolling bearing, the rolling bearing include outer ring, inner ring, rolling element and Retainer, rolling element is steel ball or roller, and described Technology for Heating Processing is local heat treatmet, heat processing unit It is outer ring, Technology for Heating Processing is comprised the following steps：
(1) bulk heat treatmet is quenched
Bearing outer ring first modifier treatment in heating furnace, temperature is 500-550 DEG C；Reach technology effect Really：Bearing outer ring integral hardness HRC25-40, obtains tempered sorbite；
(3) induction heat treatment
Heat treatment object：Outer ring raceway or raceway and cycle surface
The mode of heating of induction heat treatment is heated for electromagnetic induction local surfaces, and induction loop is pressed close to outside bearing Circle inwall or end face, the profile of induction loop are consistent with bearing outer ring inwall raceway or end face, according to product The requirement of product case depth selects the high frequency electric source of corresponding frequencies, is passed through high frequency electric to induction coil, externally Circle raceway or end face carry out sensing heating, and after heating certain hour reaches hardening heat, bearing outer ring falls immediately Enter cooling in hardening media, by adjusting heat time, air cooling time (heat transfer time) and output work Relation between rate controls the depth of quench-hardened case and transition zone；Hardened layer hardness ＞ HRC58, from raceway to Outer depth 2-4mm；Transition region 4-6mm；
(3) tempering stabilizing tissue
After bearing outer ring impewdance matching, tempering, stabilizing tissue in time.
Heating source uses electromagnetic induction heating, and high frequency, superaudio or intermediate frequency power supply pass through electromagnetic induction coil pair Raceway carries out local heating in the outer ring of bearing, and electromagnetic induction heating is easy to temperature control to adjust.

Claims (2)

1. a kind of Technology for Heating Processing of rolling bearing, the rolling bearing includes outer ring, inner ring, rolling element and holding Frame, rolling element is steel ball or roller, it is characterised in that described Technology for Heating Processing is local heat treatmet, heat Processing component is outer ring, and Technology for Heating Processing is comprised the following steps：
(1) bulk heat treatmet is quenched
Bearing outer ring first modifier treatment in heating furnace, temperature is 500-550 DEG C；Insulation 3 hours；It is cold But mode：Oil cooling；So that bearing outer ring integral hardness reaches HRC25-40, tempered sorbite is obtained；
(2) induction heat treatment
Heat treatment position：The mode of heating of outer ring raceway or cycle surface induction heat treatment is electromagnetic induction local surfaces Heating, induction loop presses close to bearing outer ring inwall or end face, in the profile and bearing outer ring of induction loop Wall raceway or end face are consistent, and the requirement according to product case depth selects the high frequency electric source of corresponding frequencies, High frequency electric is passed through to induction coil, sensing heating is carried out to outer ring raceway or end face, heating certain hour reaches After hardening heat, bearing outer ring falls into hardening media and cools down immediately, during by adjusting heat time, air cooling Between, the relation between heat transfer time and power output control the depth of hardened layer and transition zone；Hardening Layer hardness ＞ HRC58, by the outside depth 4mm of raceway；Transition region 4-6mm；Induction heating temperature：800~ 850℃；Soaking time：20~30 minutes；The type of cooling：Water-cooled；
(3) after tempering stabilizing tissue bearing outer ring impewdance matching, tempering, stabilizing tissue in time；
180 DEG C~200 DEG C of temperature, soaking time 40~50 minutes；The type of cooling：It is air-cooled.
2. the Technology for Heating Processing of rolling bearing according to claim 1, it is characterised in that the material of the outer ring It is 60# medium carbon steel.
CN201510956949.3A 2015-12-17 2015-12-17 The rolling bearing manufactured using special thermal treatment technique Pending CN106893852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510956949.3A CN106893852A (en) 2015-12-17 2015-12-17 The rolling bearing manufactured using special thermal treatment technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510956949.3A CN106893852A (en) 2015-12-17 2015-12-17 The rolling bearing manufactured using special thermal treatment technique

Publications (1)

Publication Number Publication Date
CN106893852A true CN106893852A (en) 2017-06-27

Family

ID=59188419

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510956949.3A Pending CN106893852A (en) 2015-12-17 2015-12-17 The rolling bearing manufactured using special thermal treatment technique

Country Status (1)

Country Link
CN (1) CN106893852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108500568A (en) * 2018-04-09 2018-09-07 张家港市海工船舶机械制造有限公司 A kind of rolling bearing processing technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108500568A (en) * 2018-04-09 2018-09-07 张家港市海工船舶机械制造有限公司 A kind of rolling bearing processing technology

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Application publication date: 20170627