CN109986005A - A kind of forging technology of wind driven generator principal shaft - Google Patents

A kind of forging technology of wind driven generator principal shaft Download PDF

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Publication number
CN109986005A
CN109986005A CN201711482808.8A CN201711482808A CN109986005A CN 109986005 A CN109986005 A CN 109986005A CN 201711482808 A CN201711482808 A CN 201711482808A CN 109986005 A CN109986005 A CN 109986005A
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China
Prior art keywords
forging
temperature
heating
steel billet
hours
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Pending
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CN201711482808.8A
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Chinese (zh)
Inventor
付旭升
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Individual
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Individual
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Priority to CN201711482808.8A priority Critical patent/CN109986005A/en
Publication of CN109986005A publication Critical patent/CN109986005A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a kind of forging technologies of wind driven generator principal shaft, include the following steps: one, casting, steel alloy molten steel is cast to center cast tube, obtains steel billet；Two, it heats for the first time, three, forging, by the steel billet after heating in hydraulic press jumping-up or pulling, four, second of heating, five, forging and forming, six, cooling, seven, heat treatment.The technique obtains the wind driven generator principal shaft that toughness is high, low temperature resistant and high intensity using the forging process of excellent alloy proportion and exquisiteness, can safely and steadly bear load under compared with high wind energy and larger temperature difference.

Description

A kind of forging technology of wind driven generator principal shaft
Technical field
The present invention relates to a kind of forging technologies of wind driven generator principal shaft.
Background technique
Today's society, with global energy shortage and environmental pollution the problems such as, are increasingly serious, find renewable energy and have become The key subjects faced for countries in the world.And nature wind energy, compared with other energy, not only reserves are big, it is widely distributed, forever It is inexhausted, but also have upper detective, construction period it is short, than the basic less investment of the construction of hydropower stations, strong flexibility, and can be effective Contain greenhouse effects and Sandstorm Disaster, it is environmentally protective the features such as.Therefore, it is had become using wind power generation as new energy development The important component of global future source of energy development strategy and receive the great attention of various countries and support energetically.But due to The technology of currently manufactured wind power equipment is not mature enough, causes wind power plant expensive, cost of wind power generation is higher, wind power price Higher than coal electricity electricity price, to constrain the fast development of wind-powered electricity generation.
It is the supporting part of wind power equipment for MW grades of Wind turbines wind power principal axis of wind turbine equipment, needs stronger Under wind energy, the environment temperatures such as subzero 40 degrees Celsius, meet the specific requirement such as bearing load.Currently used main shaft one As be all made of the base steel of Q345E material as the raw material for starting processing, roll over ring, heat treatment, metalworking etc. through blanking, forging base Satisfactory ring forging is made after step sequence, then becomes the main shaft met the requirements through further machining again.Conventional master spindle For forging since the range that material composition and physical and chemical index allow is larger, forging and heat treatment process are simply rough, cause product matter Measure unstable, still difficulty meets under stronger wind energy, larger temperature difference, safely and steadly bears the specific uses such as load and wants It asks.
Summary of the invention
The invention discloses a kind of forging technology of wind driven generator principal shaft, the technique using excellent alloy proportion and Consummate forging process, obtains the wind driven generator principal shaft that toughness is high, low temperature resistant and high intensity, can compared with high wind energy and compared with Load is safely and steadly born under big temperature difference.
The forging technology of wind driven generator principal shaft of the invention includes the following steps:
One, it casts
Steel alloy molten steel is cast to center cast tube, obtains steel billet；The each component and weight percent of its medium alloy steel are carbon 0.33~0.36%, silicon 0.17~0.37%, manganese 0.81~0.94%, phosphorus≤0.009%, sulphur≤0.009%, chromium 1.02~ 1.17%, molybdenum 0.20~0.30%, nickel 0.35~0.45%, copper≤0.15%, aluminium 0.022~0.062%, niobium 0.028~ 0.068%；Tungsten, arsenic, tin, lead, any one element in titanium are ≤0.01%；Remaining is iron.
Two, it heats
It heating for the first time, steel billet is fitted into gas heating furnace and is heated, first time heating temperature is 1050~1250 DEG C, And at heating temperature range inside holding 5~6 hours, wherein heating of the steel billet during from firing up to the heating temperature is fast Spend≤150 DEG C/h.
Three, it forges
By the steel billet after heating in hydraulic press jumping-up or pulling, initial forging temperature is 1150~1250 DEG C, and forging ratio is greater than 3~6 times, Final forging temperature is 750 DEG C~790 DEG C.
Four, it heats
Second of heating, the steel billet after forging is fitted into gas heating furnace and is heated, second of heating temperature is
950~1150 DEG C, and keep the temperature 2~3 hours within this temperature range.
Five, forging and forming
Steel billet obtained in above-mentioned steps is forged into the forging for meeting size on a hydraulic press.
Six, cooling
After being cooled to 280 DEG C~320 DEG C, 640~660 DEG C of isothermals are heated to, the time of isothermal is 10~20 hours.
Preferably, the forging technology further includes following step,
Seven, it is heat-treated
Forging enters heat-treatment furnace and is heated to 820 ± 5 DEG C, and after keeping the temperature 3 hours, air-cooled or quenching of coming out of the stove is to 300 DEG C or less； Stove heating is reentered to 840 ± 5 DEG C, quenching of coming out of the stove in 3 hours is kept the temperature, is cooled to 200 DEG C and is heated to hereinafter, entering back into tempering furnace 550 ± 10 DEG C, 5~6 hours are kept the temperature, then 150 DEG C or less is slowly cooled to furnace and comes out of the stove.
The present invention by heating, forging, reheating, forges mistake cooling later by using the steel ingot of specific components again Journey, the main shaft forging being had excellent performance further promote its mechanical property in addition, being heat-treated after cooling, thus Fatigue resistance height is obtained, the impact resistance and all good wind driven generator principal shaft of toughness, long service life are reliable steady under low temperature It is fixed, facilitate China and greatly develop wind-powered electricity generation cause, protects non-renewable resources, protect the environment to benefit the people.

Claims (2)

1. a kind of forging technology of wind driven generator principal shaft, which comprises the steps of:
One, it casts
Steel alloy molten steel is cast to center cast tube, obtains steel billet；The each component and weight percent of its medium alloy steel are carbon 0.33~0.36%, silicon 0.17~0.37%, manganese 0.81~0.94%, phosphorus≤0.009%, sulphur≤0.009%, chromium 1.02~ 1.17%, molybdenum 0.20~0.30%, nickel 0.35~0.45%, copper≤0.15%, aluminium 0.022~0.062%, niobium 0.028~ 0.068%；Tungsten, arsenic, tin, lead, any one element in titanium are ≤0.01%；Remaining is iron；
Two, it heats
Heat for the first time, steel billet be fitted into gas heating furnace and is heated, first time heating temperature for 1050~
1250 DEG C, and at heating temperature range inside holding 5~6 hours, wherein steel billet is from firing up to the heating temperature mistake Heating rate≤150 DEG C/h in journey；
Three, it forges
By the steel billet after heating in hydraulic press jumping-up or pulling, initial forging temperature is 1150~1250 DEG C, and forging ratio is greater than 3~6 times, Final forging temperature is 750 DEG C~790 DEG C；
Four, it heats
Second heats, and the steel billet after forging is fitted into gas heating furnace and is heated, second of heating temperature for 950~ 1150 DEG C, and keep the temperature 2~3 hours within this temperature range；
Five, forging and forming
Steel billet obtained in above-mentioned steps is forged into the forging for meeting size on a hydraulic press；
Six, cooling
After being cooled to 280 DEG C~320 DEG C, 640~660 DEG C of isothermals are heated to, the time of isothermal is 10~20 hours.
2. the forging technology of wind driven generator principal shaft as described in claim 1, which is characterized in that the technique further includes following Step, seven, heat treatment
Forging enters heat-treatment furnace and is heated to 820 ± 5 DEG C, and after keeping the temperature 3 hours, air-cooled or quenching of coming out of the stove is to 300 DEG C or less； Stove heating is reentered to 840 ± 5 DEG C, quenching of coming out of the stove in 3 hours is kept the temperature, is cooled to 200 DEG C and is heated to hereinafter, entering back into tempering furnace 550 ± 10 DEG C, 5~6 hours are kept the temperature, then 150 DEG C or less is slowly cooled to furnace and comes out of the stove.
CN201711482808.8A 2017-12-29 2017-12-29 A kind of forging technology of wind driven generator principal shaft Pending CN109986005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711482808.8A CN109986005A (en) 2017-12-29 2017-12-29 A kind of forging technology of wind driven generator principal shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711482808.8A CN109986005A (en) 2017-12-29 2017-12-29 A kind of forging technology of wind driven generator principal shaft

Publications (1)

Publication Number Publication Date
CN109986005A true CN109986005A (en) 2019-07-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711482808.8A Pending CN109986005A (en) 2017-12-29 2017-12-29 A kind of forging technology of wind driven generator principal shaft

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112522631A (en) * 2020-11-13 2021-03-19 江苏联峰能源装备有限公司 Steel for wind power and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112522631A (en) * 2020-11-13 2021-03-19 江苏联峰能源装备有限公司 Steel for wind power and preparation method thereof

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Application publication date: 20190709