WO2008095446A1 - A method for making ring forging component - Google Patents

A method for making ring forging component Download PDF

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Publication number
WO2008095446A1
WO2008095446A1 PCT/CN2008/070234 CN2008070234W WO2008095446A1 WO 2008095446 A1 WO2008095446 A1 WO 2008095446A1 CN 2008070234 W CN2008070234 W CN 2008070234W WO 2008095446 A1 WO2008095446 A1 WO 2008095446A1
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Prior art keywords
temperature
forging
centigrade
molten steel
ring
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PCT/CN2008/070234
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French (fr)
Chinese (zh)
Inventor
Chengxiang Fan
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Chengxiang Fan
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Publication of WO2008095446A1 publication Critical patent/WO2008095446A1/en

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • 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
    • Y02P10/20—Recycling

Definitions

  • the invention relates to the field of forging manufacturing, and in particular to a method for preparing a ring forging.
  • the domestic manufacturing of ring forgings is made from steel ingots and round steel produced by steel mills. It is purchased from the steel mill or steel market and transported to the forging plant. It is then sawn into the required size and weight and heated in the furnace. When punching holes on the forging hammer, reaming, and then expanding into a ring forging on the ramming machine.
  • This process manufacturing method has a long production cycle and high energy consumption (requires a second heating, power consumption when cutting), and material consumption (head, tail, sawing and heating oxidation, etc.), increase transportation The cost increases the production cost by more than 30%.
  • the forging plant has to invest in sawing equipment, build a raw material warehouse, build a heating furnace, and consume raw coal and electric energy.
  • the factory not only increases investment but also pollutes the surrounding environment. This is extremely incompatible with the country's energy saving and consumption reduction of 20% in 2010.
  • CN14049A published on March 26, 2003, the invented name is "Flange Processing and Forming Process", and the application discloses a method for manufacturing a flange by using molten steel, which is disadvantageous in that The molten steel is centrifugally cast into a flange blank initial shape at 1520-1550 ° C, but then cooled to normal temperature in a pit ( 10-48 hours), then turned, and then heated again in the furnace to 1180-1200 ° C. Forging a flange forging blank.
  • This method not only high energy consumption, but also heating to 1180-1200 °C for forging, the flue gas is highly polluted and has a long production cycle.
  • the existing manufacturing of the ring-shaped forgings has high production cost and long production cycle, and it is inconvenient to form an automated production line due to intermittent production processes, and the production efficiency is low.
  • the technical problem to be solved by the present invention is to provide a method for preparing a ring forging, which utilizes the residual heat of the molten steel to shorten the production cycle of the annular forging, reduce the production cost, and improve the production efficiency.
  • the present invention provides a method for preparing a toroidal forging comprising: using molten steel having a temperature of 1570 to 1700 ° C to heat the molten steel to a temperature of 1540 to 1600 ° C, and weighing with a quantitative casting packet.
  • the preform is poured into a centrifugal casting mold, and the burr is removed after demolding at 1150 to 1250 ° C, and the burred blank is upset at a temperature of 1100 to 1200 ° C to a desired size of the process, and then
  • the ring forgings are made by expanding to the size of the ring forging at a temperature of 950 to 1050 ° C and removing the burrs that appear when the ram is expanded.
  • the residual heat is quenched at a temperature of 900 to 820 °C.
  • the preparation method of the annular forging according to the present invention completes the whole production process by continuous casting, continuous forging, continuous rolling, quenching (optional) by using the falling temperature gradient of the molten steel discharged from the furnace, and simultaneously achieves the same process.
  • the invention provides a method for preparing a ring forging piece, which utilizes molten steel with a temperature of 1570 ⁇ 1700 ° C, and heats the molten steel to 1540 ⁇ 1600 ° C, and weighs and quantifies by quantitative casting, and then injects into centrifugal casting.
  • the blank is formed in the molding die, the burr is removed after demolding at 1150 ⁇ 1250 °C, and the blank after the burr removal is swaged at a temperature of 1100 ⁇ 1200 ° C to the required size of the process, and then at 950 ⁇ 1050 At a temperature of °C, the enthalpy is expanded to the size of the ring forging, and the burr that appears when the ramming is removed is made into a ring forging.
  • the dimensions of the Steyr engine internal gear forging blank are: ⁇ 264 ⁇ 218x100 mm, and the material is: 45# steel.
  • the specific preparation process is as follows: The medium frequency induction furnace smelts 45# steel high-quality molten steel with qualified components, and the molten steel is discharged at 1570 ⁇ 1590 °C, and the molten steel is kept at 1550 ⁇ 1570 °C, and the heat preservation method is limited to this. Then inject the centrifugal casting mold at 1530 ⁇ 1550 °C (such as centrifugal pouring machine) Internal molding, demoulding at 1200 ⁇ 1220 °C, then upsetting to 100 mm height on a 400T press, the temperature has dropped to about 1100 °C, and then expanded to 1000 °C at 1000 °C to 1050 °C The outer diameter is ⁇ 266.6 mm. That is, the required Steyr engine internal tooth upsetting is prepared.
  • the residual heat can be quenched at a temperature of 900 ⁇ 820 °C, mainly for different types of steel, the temperature may be different.
  • quenching is best for 45# steel at a temperature of 830 to 850 °C. This process not only saves energy, but also saves investment, such as saving heat treatment equipment and workshops. It also improves production efficiency.
  • the waste heat can be quenched immediately after the completion of the previous process to integrate the production process. That is, the production cost is reduced and the production efficiency is improved.
  • Qu Yueliang strength 358 ⁇ 420 N / mm 2 ;
  • Grain size 6 ⁇ 8 levels
  • the process flow of the invention not only reduces the preparation process, but also reduces the energy consumption and material consumption, shortens the production cycle, and reduces the production cost (according to statistics, the cost can be reduced by 30% or so), thereby Improve their own economic and social benefits.
  • the process flow for preparing the forgings of the present invention mainly includes the following:
  • the present invention makes full use of the residual heat of the molten steel, and through continuous casting, continuous forging, continuous rolling, and if necessary, heat treatment can be used to prepare forgings.
  • the entire production process complements each other, no Need cutting-edge processes, all in one go. Due to the centrifugal casting machine, the centrifugal force can be utilized to make the inner structure of the annular forging more compact, and the lighter impurities are left on the inner wall of the centrifugal casting blank, and the impurities can be removed during machining, thereby improving the ring shape.
  • the intrinsic quality of the metal material of the forging Due to the centrifugal casting machine, the centrifugal force can be utilized to make the inner structure of the annular forging more compact, and the lighter impurities are left on the inner wall of the centrifugal casting blank, and the impurities can be removed during machining, thereby improving the ring shape.
  • the intrinsic quality of the metal material of the forging Due to the centrifugal casting machine, the centr
  • the present invention is to integrate the entire production process and realize the integration of the process flow, that is, to integrate and continue the processes previously performed separately.
  • the use of residual heat from the molten steel not only saves procedures and energy, but also reduces costs.

Abstract

A method for making ring forging component. Keep the molten steel whose temperature is between 1570 centigrade and 1700 centigrade in the heat preservation furnace whose inner temperate is 1540 to 1600 centigrade to keep the heat. Weigh them by the small casting bag with fixed weight and inject them into the eccentric molding module after fixing their weights; deprive the module under the temperature between 1150 and 1250 centigrade; get rid of the burr; and forge them to the needed size under the temperature between 1100 and 1200 centigrade; and ring roll them to the size of forging component under the temperature of 950 to 1050 centigrade; at last , get rid of the burr occurred when ring rolling ; then the ring forging component is made. The method takes use of the spare heat of molten steel, casting, forging, rolling and quenching; it complements the whole product process by using the decreasing stair of the temperature of molten steel; it saves the power and reduces the cost; it reduces the environmental pollution and the let of exhaust gas; it shortens the product period and increases the productivity; it reduces the product cost and increase the economic benefit.

Description

一种环形锻件的制备方法  Method for preparing ring forging
本申请要求于 2007 年 2 月 8 日提交中国专利局、 申请号为 200710078196.6、 发明名称为"一种环形锻件的制备方法"的中国专利申请的优 先权， 其全部内容通过引用结合在本申请中。  The present application claims priority to Chinese Patent Application No. 200710078196.6, entitled "A Method of Making a Ring Forging", filed on February 8, 2007, the entire contents of which is incorporated herein by reference. .
技术领域 Technical field
本实发明涉及一种锻件制造领域， 特别涉及一种环形锻件的制备方法。  The invention relates to the field of forging manufacturing, and in particular to a method for preparing a ring forging.
背景技术 Background technique
目前国内制造环形类锻件是用炼钢厂生产的钢锭和圆钢为原材料， 从 钢厂或钢材市场采购运到锻造厂， 然后锯成所需要的尺寸、 重量， 在加热 炉中进行加热， 出炉时在锻锤上经冲孔， 扩孔， 再在辗扩机上辗扩成环行 锻件。 这种工艺制造方法生产周期长， 耗能大（需要第二次加热， 下料时 需要耗电）， 材料消耗多 （料头、 料尾、 锯切和加热氧化烧损等）， 增加往 来运输费用， 使生产成本增加 30%以上。 另一方面锻造厂要投资购锯料设 备， 建原材料库， 建加热炉， 耗费原煤和电能， 工厂不但增加了投资又污 染了周围环境。这和国家在 2010年节能降耗 20%,改善空气质量极不相容。 中国专利公开号 CN14049A，公开日 2003年 3月 26日，发明创造名称为"法 兰盘加工成型工艺"， 该申请公开了用出炉钢水制造法兰盘的方法， 其不足 之处在于， 虽然利用钢水在 1520-1550°C用离心浇铸出法兰盘毛坯初型， 但 随后在坑中 （ 10-48小时）冷却至常温， 再车削加工， 然后在炉中再加热至 1180-1200°C进行锻造成法兰盘锻坯。 这种工艺方法： 不但能耗高， 再二次 加热至 1180-1200°C进行锻造时燃放烟气对环境污染大，生产周期长。此外， 钢材的消耗也大（需要两次车削）， 生产成本必然高， 这因为钢材和能耗在 机械制造中占整个成本的 65-75%。 因此， 现有制造环形类锻件的生产成本 高、 生产周期长， 由于生产工艺间断， 不便形成自动化生产线， 生产效率 低。  At present, the domestic manufacturing of ring forgings is made from steel ingots and round steel produced by steel mills. It is purchased from the steel mill or steel market and transported to the forging plant. It is then sawn into the required size and weight and heated in the furnace. When punching holes on the forging hammer, reaming, and then expanding into a ring forging on the ramming machine. This process manufacturing method has a long production cycle and high energy consumption (requires a second heating, power consumption when cutting), and material consumption (head, tail, sawing and heating oxidation, etc.), increase transportation The cost increases the production cost by more than 30%. On the other hand, the forging plant has to invest in sawing equipment, build a raw material warehouse, build a heating furnace, and consume raw coal and electric energy. The factory not only increases investment but also pollutes the surrounding environment. This is extremely incompatible with the country's energy saving and consumption reduction of 20% in 2010. Chinese Patent Publication No. CN14049A, published on March 26, 2003, the invented name is "Flange Processing and Forming Process", and the application discloses a method for manufacturing a flange by using molten steel, which is disadvantageous in that The molten steel is centrifugally cast into a flange blank initial shape at 1520-1550 ° C, but then cooled to normal temperature in a pit ( 10-48 hours), then turned, and then heated again in the furnace to 1180-1200 ° C. Forging a flange forging blank. This method: not only high energy consumption, but also heating to 1180-1200 °C for forging, the flue gas is highly polluted and has a long production cycle. In addition, the consumption of steel is also large (two turning is required), and the production cost is inevitably high, because steel and energy consumption account for 65-75% of the total cost in machinery manufacturing. Therefore, the existing manufacturing of the ring-shaped forgings has high production cost and long production cycle, and it is inconvenient to form an automated production line due to intermittent production processes, and the production efficiency is low.
发明内容 Summary of the invention
本实发明要解决的技术问题是提供一种环形锻件的制备方法， 利用出炉 钢水的余热， 以缩短制备环形锻件的生产周期， 降低生产成本， 提高生产效 率。 为实现上述技术问题， 本发明提供一种环形锻件的制备方法， 包括： 利用出炉为 1570 ~ 1700°C温度的钢水， 将出炉的钢水保温至 1540 ~ 1600°C , 用定量浇铸小包称重定量后， 注入离心铸造的成型模中制坯， 在 1150 ~ 1250°C脱模后去掉毛刺， 对所述去掉毛刺后的坯在 1100 ~ 1200°C的 温度下镦锻至工艺所需尺寸，再在 950 ~ 1050°C的温度下辗扩至环形锻件尺 寸， 以及去掉辗扩时出现的毛刺后制成环形锻件。 The technical problem to be solved by the present invention is to provide a method for preparing a ring forging, which utilizes the residual heat of the molten steel to shorten the production cycle of the annular forging, reduce the production cost, and improve the production efficiency. In order to achieve the above technical problem, the present invention provides a method for preparing a toroidal forging comprising: using molten steel having a temperature of 1570 to 1700 ° C to heat the molten steel to a temperature of 1540 to 1600 ° C, and weighing with a quantitative casting packet. Thereafter, the preform is poured into a centrifugal casting mold, and the burr is removed after demolding at 1150 to 1250 ° C, and the burred blank is upset at a temperature of 1100 to 1200 ° C to a desired size of the process, and then The ring forgings are made by expanding to the size of the ring forging at a temperature of 950 to 1050 ° C and removing the burrs that appear when the ram is expanded.
如果需要进行热处理， 在辗扩至锻件尺寸后， 利用余热在 900 ~ 820 °C 的温度下进行淬火处理。  If heat treatment is required, after the enthalpy is expanded to the forging size, the residual heat is quenched at a temperature of 900 to 820 °C.
由此可知，本发明所述环形锻件的制备方法， 利用出炉钢水出炉时温度的 下降梯度， 通过连铸、 连锻、 连轧、 淬火（可选）， 完成整个生产过程， 一气 呵成， 同时也达到了节能降耗， 减少环境污染和废气排放， 缩短生产周期， 提 高劳动生产率， 降低生产成本， 提高了经济效益。  It can be seen that the preparation method of the annular forging according to the present invention completes the whole production process by continuous casting, continuous forging, continuous rolling, quenching (optional) by using the falling temperature gradient of the molten steel discharged from the furnace, and simultaneously achieves the same process. Energy conservation and consumption reduction, reducing environmental pollution and exhaust emissions, shortening production cycle, increasing labor productivity, reducing production costs, and improving economic efficiency.
具体实施方式 detailed description
下面结合具体实施方式对本实发明作进一步的说明，但并不因此将本发明 限制在所述的实施例范围之中。  The present invention is further described in conjunction with the specific embodiments, but the invention is not limited to the scope of the embodiments described.
本发明提供一种环形锻件的制备方法， 利用出炉为 1570 ~ 1700°C温度的 钢水， 并将所述出炉的钢水保温至 1540 ~ 1600°C , 用定量浇铸小包称重定 量后， 注入离心铸造的成型模中制坯， 在 1150 ~ 1250°C脱模后去掉毛刺， 并对所述去掉毛刺后的坯在 1100 ~ 1200°C的温度下镦锻至工艺所需尺寸， 再在 950 ~ 1050°C的温度下辗扩至环形锻件尺寸，以及去掉辗扩时出现的毛 刺后制成环形锻件。  The invention provides a method for preparing a ring forging piece, which utilizes molten steel with a temperature of 1570 ~ 1700 ° C, and heats the molten steel to 1540 ~ 1600 ° C, and weighs and quantifies by quantitative casting, and then injects into centrifugal casting. The blank is formed in the molding die, the burr is removed after demolding at 1150 ~ 1250 °C, and the blank after the burr removal is swaged at a temperature of 1100 ~ 1200 ° C to the required size of the process, and then at 950 ~ 1050 At a temperature of °C, the enthalpy is expanded to the size of the ring forging, and the burr that appears when the ramming is removed is made into a ring forging.
为了便于本领域技术人员的理解，下面以制备斯太尔发动机内齿圏锻坯为 例来说明。  In order to facilitate the understanding of those skilled in the art, the following is an example of preparing a Steyr engine internal tooth forging blank.
所述斯太尔发动机内齿圏锻坯（即锻件）的尺寸为： Φ264χΦ218x100 mm, 材质为： 45#钢。  The dimensions of the Steyr engine internal gear forging blank (ie forgings) are: Φ264χΦ218x100 mm, and the material is: 45# steel.
具体的制备工艺流程为： 中频感电炉熔炼出成分合格的 45#钢优质钢水， 在 1570 ~ 1590°C出钢水， 对出炉的钢水在 1550 ~ 1570°C保温， 其保温的方式 限于此。 然后在 1530 ~ 1550°C时注入离心铸造的成型模（比如离心浇涛机） 内成型， 在 1200 ~ 1220°C脱模， 然后在 400T压力机上镦锻至 100 mm高， 此时 温度已降到 1100°C左右， 然后在 1000 ~ 1050°C时在辗扩机上辗扩至外径 Φ266.6 mm。 即制备出所需的斯太尔发动机内齿圏锻 。 The specific preparation process is as follows: The medium frequency induction furnace smelts 45# steel high-quality molten steel with qualified components, and the molten steel is discharged at 1570 ~ 1590 °C, and the molten steel is kept at 1550 ~ 1570 °C, and the heat preservation method is limited to this. Then inject the centrifugal casting mold at 1530 ~ 1550 °C (such as centrifugal pouring machine) Internal molding, demoulding at 1200 ~ 1220 °C, then upsetting to 100 mm height on a 400T press, the temperature has dropped to about 1100 °C, and then expanded to 1000 °C at 1000 °C to 1050 °C The outer diameter is Φ266.6 mm. That is, the required Steyr engine internal tooth upsetting is prepared.
若需淬火， 可利用余热在温度为 900 ~ 820°C淬火， 主要是针对不同材质 的钢种， 温度可能不同。 优选的， 在实际应用中， 对于 45#钢， 在温度为 830〜850°C )淬火最佳。 该过程不但节约能源， 还能节约投资， 如节省了热处 理淬火设备和车间； 同时也提高了生产效率，如利用余热可在上一工序完成后 立即进行淬火处理，使生产流程一体化。即降低了生产成本，提高了生产效率。  If quenching is required, the residual heat can be quenched at a temperature of 900 ~ 820 °C, mainly for different types of steel, the temperature may be different. Preferably, in practical applications, quenching is best for 45# steel at a temperature of 830 to 850 °C. This process not only saves energy, but also saves investment, such as saving heat treatment equipment and workshops. It also improves production efficiency. For example, the waste heat can be quenched immediately after the completion of the previous process to integrate the production process. That is, the production cost is reduced and the production efficiency is improved.
所述锻件尺寸： 外径 Φ263.5 ~ Φ264.3 mm , 内径 Φ218.5 ~ Φ216 mm , 高 度 100 mm。  The forging dimensions: outer diameter Φ263.5 ~ Φ264.3 mm, inner diameter Φ218.5 ~ Φ216 mm, height 100 mm.
机械性能（本体横向， 正火状态）为：  Mechanical properties (main body lateral, normalized state) are:
抗拉强度： 610 ~ 675N/mm2 ； Tensile strength: 610 ~ 675N/mm 2 ;
屈月良强度： 358 ~ 420 N/ mm2 ； Qu Yueliang strength: 358 ~ 420 N / mm 2 ;
延伸率： 18 - 21 % ;  Elongation: 18 - 21 %;
断面收缩率： 38 ~ 42 %；  Reduced area: 38 ~ 42%;
晶粒度： 6 ~ 8级；  Grain size: 6 ~ 8 levels;
金相组织： 细珠光体 +铁素体。  Metallographic organization: fine pearlite + ferrite.
结论： 根据本发明所述工艺流程制备出锻件的化学成分、机械性能、金相 组织和晶粒度完全达到国家标准和客户图纸要求。  Conclusion: The chemical composition, mechanical properties, metallographic structure and grain size of the forgings prepared according to the process of the present invention fully meet the requirements of national standards and customer drawings.
由此可见， 本发明所述的工艺流程不但：减少了制备工序， 同时还降低了 能耗与材料消耗， 缩短了生产周期， 降低生产成本（据统计可以降低成本的 30 %，左右）， 从而提高了自身经济效益和社会效益。  It can be seen that the process flow of the invention not only reduces the preparation process, but also reduces the energy consumption and material consumption, shortens the production cycle, and reduces the production cost (according to statistics, the cost can be reduced by 30% or so), thereby Improve their own economic and social benefits.
由上述制备锻件的工艺流程可知， 本发明制备锻件的工艺流程如下主要 包括：  It can be seen from the above process for preparing the forgings that the process flow for preparing the forgings of the present invention mainly includes the following:
中频炉炼钢——保温炉保温——定量小包称重——离心浇铸机制坯 Medium frequency furnace steelmaking - insulation furnace insulation - quantitative packet weighing - centrifugal casting mechanism blank
——去刺机去毛刺——压力机镦锻——辗扩机辗扩成型——余热热处理 (如果需要）——去刺机去辗扩毛刺——检测——入库。 - Deburring machine to burr - press forging - 辗 expansion machine 辗 expansion molding - residual heat treatment (if needed) - to slash machine to expand burrs - detection - storage.
因此， 本发明充分利用出炉钢水的余热， 通过连铸、 连锻、 连轧， 如果 需要还可以利用余热进行热处理来制备锻件。 整个生产过程相辅相成， 不 需要尖端工艺流程， 一气呵成。 由于采用离心浇铸机进行浇铸， 充分利用 离心力， 可以使环形锻件的内在结构更加紧密， 而使质量比较轻的杂质留 在离心浇铸坯件的内壁， 该杂质可以在机械加工时除去， 从而提高环形锻 件的金属材料的内在品质。 此外， 在生产过程中， 可采用机械手传递， 自动 化 （PLC工业计算机） 和半自动化控制， 大量减少工人的体力劳动， 大部 分工序即使是残疾人员也可进行操作。 具体可参见表 1 中本发明所述新工 艺流程与现有技术中旧工艺流程的对比： Therefore, the present invention makes full use of the residual heat of the molten steel, and through continuous casting, continuous forging, continuous rolling, and if necessary, heat treatment can be used to prepare forgings. The entire production process complements each other, no Need cutting-edge processes, all in one go. Due to the centrifugal casting machine, the centrifugal force can be utilized to make the inner structure of the annular forging more compact, and the lighter impurities are left on the inner wall of the centrifugal casting blank, and the impurities can be removed during machining, thereby improving the ring shape. The intrinsic quality of the metal material of the forging. In addition, in the production process, robotic transfer, automation (PLC industrial computer) and semi-automatic control can be used to greatly reduce the manual labor of workers, and most processes can be operated even by disabled people. For details, refer to the comparison between the new process flow of the present invention and the old process flow in the prior art in Table 1:
表 1  Table 1
Figure imgf000006_0001
Figure imgf000006_0001
由此可见， 利用本发明， 只要将钢水的化学成分、 温度进行调整， 将离 心浇铸模， 辗扩机模的几何形状、 尺寸大小进行改变， 便可生产出多种不 同材质， 不同几何形状 （即回转体）， 不同尺寸的回转体锻件或环形锻件。 也就是说， 本发明在于将整个生产流程的进行整合， 实现工艺流程的一体化， 即把以前分开进行的工序进行整合、 连续。 利用出炉钢水的余热， 不但节约程 序和能源， 同时也降低了成本。 It can be seen that with the present invention, as long as the chemical composition and temperature of the molten steel are adjusted, the geometry and size of the centrifugal casting mold and the expansion mold can be changed, and various kinds of defects can be produced. Same material, different geometry (ie, rotary body), different sizes of rotary forgings or ring forgings. That is to say, the present invention is to integrate the entire production process and realize the integration of the process flow, that is, to integrate and continue the processes previously performed separately. The use of residual heat from the molten steel not only saves procedures and energy, but also reduces costs.
以上实施例仅用以说明本发明的技术方案，而非对本发明作限制性理解。尽 管参照上述较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当 理解： 其依然可以对本发明的技术方案进行修改或者等同替换， 而这种修改或 者等同替换并不脱离本发明技术方案的精神和范围。  The above embodiments are only intended to illustrate the technical solutions of the present invention, and are not to be construed as limiting. Although the present invention has been described in detail with reference to the preferred embodiments thereof, those skilled in the art will understand that the invention may be modified or equivalently substituted without departing from the invention. The spirit and scope of the programme.

Claims

利 要 Advantage
1、 一种环形锻件的制备方法， 利用出炉为 1570 ~ 1700°C温度的钢水， 其 特征在于：将出炉的钢水保温至 1540 ~ 1600°C ,用定量浇铸小包称重定量后， 注入离心铸造的成型模中制坯， 在 1150 ~ 1250°C脱模后去掉毛刺， 对所述 去掉毛刺后的坯在 1100 ~ 1200°C的温度下镦锻至工艺所需尺寸， 再在 950 ~ 1050 °C的温度下辗扩至环形锻件尺寸 , 以及去掉辗扩时出现的毛刺后制成 环形锻件。  1. A method for preparing a toroidal forging, which utilizes molten steel having a temperature of 1570 to 1700 ° C, characterized in that the molten steel is kept at a temperature of 1540 to 1600 ° C, and is quantitatively cast and weighed and quantified, and then injected into a centrifugal casting. The blank is formed in the molding die, and the burr is removed after demolding at 1150 ~ 1250 °C, and the blank after the burr removal is swaged at a temperature of 1100 ~ 1200 ° C to the required size of the process, and then at 950 ~ 1050 ° The temperature of C is expanded to the size of the ring forging, and the burr that appears when the swell is removed is made into a ring forging.
2、 根据权利要求 1 所述的一种环形锻件的制备方法， 其特征在于： 在辗 扩至锻件尺寸后， 在 900 ~ 820°C的温度下进行淬火处理。  2. A method of preparing a toroidal forging according to claim 1, wherein: after the 辗 is expanded to the forging size, the quenching treatment is performed at a temperature of 900 to 820 °C.
3、 根据权利要求 1 所述的一种环形锻件的制备方法， 其特征在于： 所述  3. A method of preparing a toroidal forging according to claim 1, wherein:
4、 根据权利要求 1 所述的一种环形锻件的制备方法， 其特征在于： 所述 去掉毛刺后的坯在 1100 ~ 1200°C的温度下， 在压力机上镦锻至工艺所需尺 寸， 再在 950 ~ 1050°C的温度下， 通过辗扩机辗扩至环形锻件尺寸。 4. The method for preparing a toroidal forging according to claim 1, wherein: the burr-removed blank is upset at a temperature of 1100 to 1200 ° C on a press to a desired size of the process, and then At a temperature of 950 ~ 1050 ° C, it is expanded to the size of the ring forging by means of a ramming machine.
PCT/CN2008/070234 2007-02-08 2008-02-01 A method for making ring forging component WO2008095446A1 (en)

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CN116967724B (en) * 2023-09-25 2023-12-05 陕西长羽航空装备股份有限公司 Forming method of large-diameter high-cylinder thin-wall forging for manufacturing aeroplane parts

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