CN108274204A - The manufacturing process of wind-powered electricity generation T section ring - Google Patents

The manufacturing process of wind-powered electricity generation T section ring Download PDF

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Publication number
CN108274204A
CN108274204A CN201810202910.6A CN201810202910A CN108274204A CN 108274204 A CN108274204 A CN 108274204A CN 201810202910 A CN201810202910 A CN 201810202910A CN 108274204 A CN108274204 A CN 108274204A
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CN
China
Prior art keywords
frustoconical
rolling
ring
special
roller
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CN201810202910.6A
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Chinese (zh)
Inventor
徐锋
吴剑
朱乾皓
万明珍
张斌
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张家港中环海陆特锻股份有限公司
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Priority to CN201810202910.6A priority Critical patent/CN108274204A/en
Publication of CN108274204A publication Critical patent/CN108274204A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00Making articles shaped as bodies of revolution
    • B21H1/06Making articles shaped as bodies of revolution rings of restricted axial length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races

Abstract

The invention discloses the wind-powered electricity generation manufacturing process of T section ring, processing step is as follows:Blanking → forging base → rolling ring → cutting → heat treatment → finishing processing.The manufacturing process of above-mentioned wind-powered electricity generation T section ring can accurately, simply and fastly process the blank of identical two pieces and T section ring shape and adjoining dimensions after using special-shaped core roller and special-shaped king roller to carry out special-shaped rolling, so as to reduce the difficulty of finishing processing, save raw material, production efficiency is improved, production cost is reduced.

Description

The manufacturing process of wind-powered electricity generation T section ring

Technical field

The present invention relates to ring forging fields, and in particular to the manufacturing process of wind-powered electricity generation T section ring.

Background technology

Currently, wind-powered electricity generation is with the manufacturing method of T section ring:Using base steel as raw material, ring is rolled over through blanking, forging base, The rectangle ring that cross section is rectangle is made and obtains wind-powered electricity generation T section ring then after finishing processing.Currently manufactured side The shortcomings that method is:Since the size of rectangle ring and the size difference of wind-powered electricity generation T section ring are bigger, so essence can be increased The difficulty of Vehicle Processing, consumption of raw materials is more, reduces production efficiency, increases production cost.

Invention content

The technical problem to be solved by the present invention is to:To provide it is a kind of can reduce finishing processing difficulty, save raw material, improve The manufacturing process of the wind-powered electricity generation of production efficiency T section ring.

To solve the above-mentioned problems, the technical solution adopted in the present invention is:The manufacture work of wind-powered electricity generation T section ring Skill, processing step are as follows:Blanking → forging base → rolling ring → cutting → heat treatment → finishing processing, it is characterised in that:

(1)In blanking, the steel material of selection is:A1035;

(2)It rolles in ring, rectangle rolling is carried out first, being rolled by steel billet that is upset, being obtained after punching in forging preforming Conventional rectangular rolling is carried out using cylindrical core roller on ring machine, intermediate blank is made, wherein radial rolling power is 220~250 tons, Axial rolling force is 150~180 tons;When conventional rectangular rolls, the main rotating speed for rolling mould is 55~62 revs/min;Cylindrical core roller Translational velocity is depending on formative stage, i.e.,:In bite stage, translational velocity is 0.5~1.2mm/ seconds, in steadily rolling rank Section, translational velocity are 1.5~2.5mm/ second, are terminating rolling sequence, and translational velocity is 0.5~0.8mm/ seconds, in the full circle stage, Translational velocity is 0;The rotating speed of upper and lower cone roller is 123~185 revs/min;The pushing speed of upper cone roller be also according to formative stage and It is fixed, i.e.,:In bite stage, it is 0.3~0.7mm/ seconds to push speed, and in steady rolling sequence, pushing speed is 1.0~1.5mm/ Second, terminating rolling sequence and full circle stage, it is 0 to push speed all;Then special-shaped rolling is carried out to intermediate blank, be made by two A identical T section ring blank symmetrically overlaps the combination ring connected and composed;Firstly the need of being produced as follows tooling:Special-shaped core Roller and special-shaped king roller, special-shaped core roller from top to bottom successively by upper shell portion, upper frustoconical section, in upper truncated cone Section, in it is lower fall frustoconical section, fall frustoconical section, the coaxial arrangement of lower shell portion down into an entirety;Wherein:Upper circle The diameter of column body segment and lower shell portion is equal, upper frustoconical section and it is lower fall frustoconical section, in upper truncated cone Section and in it is lower fall frustoconical section all in upper frustoconical section and in it is lower fall frustoconical section intersection centered on Symmetrically, the minor diameter of upper frustoconical section is equal to the diameter of upper shell portion, during the major diameter of upper frustoconical section is equal to The minor diameter of upper frustoconical section;Special-shaped king roller is from top to bottom successively by frustum of a cone on shell portion on first, second In body section, third under frustoconical section, third fall frustoconical section, second time frustoconical section, first time cylinder Body section is coaxially disposed into an entirety;Wherein:The diameter of shell portion and first time shell portion is equal on first, is cut on second Head cone section and fall for second time frustoconical section, in third under frustoconical section and third frustoconical section all with Fall symmetrical, frustoconical section on second centered on the intersection of frustoconical section in third under frustoconical section and third Minor diameter be equal to the diameter of shell portion on first, the major diameter of frustoconical section is equal to frustum of a cone in third on second The minor diameter of body section;Then special-shaped rolling, diameter are carried out to intermediate blank using special-shaped core roller and special-shaped king roller on machine for rolling ring It it is 250~280 tons to roll-force, axial rolling force is 175~200 tons, and the outside of combination ring is rolled by special-shaped king roller Shape, special-shaped its interior shape of core rolling system;When abnormity rolling, the rotating speed of special-shaped king roller is 45~55 revs/min;Special-shaped core roller Translational velocity depending on formative stage, i.e.,:In bite stage, translational velocity is 0.6~0.8mm/ seconds, in steadily rolling rank Section, translational velocity are 1.1~1.5mm/ second, are terminating rolling sequence, and translational velocity is 0.3~0.7mm/ seconds, in the full circle stage, Translational velocity is 0;The rotating speed of upper and lower cone roller is 123~145 revs/min;The pushing speed of upper cone roller be also according to formative stage and It is fixed, i.e.,:In bite stage, it is 0.3~0.7mm/ seconds to push speed, and in steady rolling sequence, pushing speed is 0.8~1.2mm/ Second, terminating rolling sequence and full circle stage, it is 0 to push speed all;

(3)In cutting, combination ring is cut along the intermediate symmetry face of its upper and lower end face, two identical T shapes can be obtained Section ring parts blank.

Further, the manufacturing process of wind-powered electricity generation above-mentioned T section ring, wherein:The upper shell portion of special-shaped core roller Smoothly transitted with cambered surface between upper frustoconical section, upper frustoconical section and between upper frustoconical section with cambered surface Smoothly transit, it is lower to fall to smoothly transit with cambered surface between frustoconical section and lower shell portion, in it is lower fall frustoconical section and It is smoothly transitted with cambered surface between frustoconical section down;Frustum of a cone on shell portion and second on the first of special-shaped king roller Smoothly transitted with cambered surface between body section, on second in frustoconical section and third between frustoconical section with the smooth mistake of cambered surface It crosses, falls frustoconical section and second time under third and fall and smoothly transitted with cambered surface between frustoconical section, second time butt It is smoothly transitted with cambered surface between cone section and first time shell portion.

Further, the manufacturing process of wind-powered electricity generation above-mentioned T section ring, wherein:The busbar of upper frustoconical section Angle with horizontal plane is 5~10 °, and the busbar of frustoconical section and the angle of horizontal plane are 5~10 ° on second, in upper cut The busbar of head cone section and the angle of axis are 0.5~2 °, and the busbar of frustoconical section and the angle of axis are in third 0.5~2 °.

Further, the manufacturing process of wind-powered electricity generation above-mentioned T section ring, wherein:The busbar of upper frustoconical section Angle with horizontal plane is 7 °, and the busbar of frustoconical section and the angle of horizontal plane are 7 ° on second, in upper truncated cone The busbar of section and the angle of axis are 0.5 °, and the busbar of frustoconical section and the angle of axis are 0.5 ° in third.

Further, the manufacturing process of wind-powered electricity generation above-mentioned T section ring, wherein:The heating of steel billet in forging process Technique is:Steel billet obtained by blanking is lain against on the cushion block in heating furnace, in-furnace temperature≤900 DEG C when billet-charging;Then plus Hot stove is heated so that in-furnace temperature keeps the temperature 2~3h after being warming up to 1130 DEG C ± 20 DEG C with the rate of≤180 DEG C/h, then Continue heating so that in-furnace temperature keeps the temperature 3~4h after being warming up to 1250 DEG C ± 20 DEG C with the rate of≤180 DEG C/h.

Advantages of the present invention is:The manufacturing process of wind-powered electricity generation of the present invention T section ring is using special-shaped core roller and different Shape king roller can accurately, simply and fastly process after special-shaped rolling two pieces it is identical with T section ring shape and The blank of adjoining dimensions saves raw material so as to reduce the difficulty of finishing processing, improves production efficiency, reduces production cost.

Description of the drawings

Fig. 1 is the structural schematic diagram of special-shaped core roller of the present invention.

Fig. 2 is the structural schematic diagram of special-shaped king roller of the present invention.

Fig. 3 is the structural schematic diagram of intermediate blank of the present invention.

Fig. 4 is the structural schematic diagram of combination ring of the present invention.

Fig. 5 is the structural schematic diagram of T section ring blank of the present invention.

Specific implementation mode

With reference to specific embodiments and the drawings, the present invention is described in further detail.

The manufacturing process of wind-powered electricity generation T section ring, processing step are as follows:Blanking → forging base → rolling ring → cutting → heat treatment → finishing processing;

(1)In blanking, the steel material of selection is:A1035;

(2)It forges in base, initial forging temperature≤1150 DEG C of steel billet, final forging temperature >=950 DEG C of steel billet;It first will be obtained by blanking Steel billet progress is upset, and through-hole is rushed on steel billet then along steel billet axis;

(3)It rolles in ring, initial forging temperature≤1150 DEG C of steel billet, final forging temperature >=950 DEG C of steel billet, carries out rectangle rolling first, In forging preforming by steel billet that is upset, being obtained after punching on machine for rolling ring using cylindrical core roller carry out conventional rectangular Intermediate blank 3 as shown in Figure 3 is made in rolling, and wherein radial rolling power is 220~250 tons, and axial rolling force is 150~180 Ton;When conventional rectangular rolls, the main rotating speed for rolling mould is 55~62 revs/min;The translational velocity of cylindrical core roller is according to formative stage Depending on, i.e.,:In bite stage, translational velocity is 0.5~1.2mm/ second, in steady rolling sequence, translational velocity for 1.5~ 2.5mm/ seconds, terminating rolling sequence, translational velocity is 0.5~0.8mm/ seconds, in the full circle stage, translational velocity 0;Above and below The rotating speed of cone roller is 123~185 revs/min;Depending on formative stage, i.e., the pushing speed of upper cone roller is also:In bite stage, It is 0.3~0.7mm/ seconds to push speed, and in steady rolling sequence, it is 1.0~1.5mm/ seconds to push speed, is terminating rolling sequence With the full circle stage, it is 0 to push speed all;Then special-shaped rolling is carried out to intermediate blank, as shown in Figure 4 identical by two is made T section ring blank symmetrically overlap the combination ring 4 connected and composed;Firstly the need of being produced as follows tooling:Special-shaped 1 He of core roller Special-shaped king roller 2, as shown in Figure 1, special-shaped core roller 1 from top to bottom successively by upper shell portion 11, upper frustoconical section 12, in Upper frustoconical section 13, in it is lower fall frustoconical section 14, fall frustoconical section 15, lower shell portion 16 down and be coaxially disposed At an entirety;Wherein:Upper shell portion 11 is equal with the diameter of lower shell portion 16, upper frustoconical section 12 and it is lower fall cut Head cone section 15, in upper frustoconical section 13 and in it is lower fall 13 and of upper frustoconical section all in of frustoconical section 14 In it is lower fall frustoconical section 14 intersection centered on it is symmetrical, the minor diameter of upper frustoconical section 12 is equal to upper shell portion 11 diameter, the minor diameter of the major diameter of upper frustoconical section 12 upper frustoconical section 13 in being equal to;As shown in Fig. 2, different Shape king roller 2 is from top to bottom successively by truncated cone in frustoconical section 22 on shell portion 21, second on first, third Section 23, fall under third frustoconical section 24, fall for second time frustoconical section 25, first time shell portion 26 be coaxially disposed at One entirety;Wherein:The diameter of shell portion 21 and first time shell portion 26 is equal on first, frustoconical section on second 22 and fall for second time frustoconical section 25, fall frustoconical section 24 under frustoconical section 23 and third in third all with the Fall symmetrical, truncated cone on second centered on the intersection of frustoconical section 24 on three under frustoconical section 23 and third The minor diameter of section 22 is equal to the diameter of shell portion 21 on first, and the major diameter of frustoconical section 22 is equal in third on second The minor diameter of frustoconical section 23;Then on machine for rolling ring using special-shaped core roller 1 and special-shaped king roller 2 to intermediate blank 3 into Row abnormity rolling, radial rolling power are 250~280 tons, and axial rolling force is 175~200 tons, is rolled by special-shaped king roller 2 The outer shape of ring is combined, special-shaped core roller 1 rolls its interior shape;When abnormity rolling, the rotating speed of special-shaped king roller 2 is 45~ 55 revs/min;The translational velocity of special-shaped core roller 1 is depending on formative stage, i.e.,:In bite stage, translational velocity is 0.6~ 0.8mm/ seconds, in steady rolling sequence, translational velocity was 1.1~1.5mm/ seconds, is terminating rolling sequence, translational velocity 0.3 ~0.7mm/ seconds, in the full circle stage, translational velocity 0;The rotating speed of upper and lower cone roller is 123~145 revs/min;The pushing of upper cone roller Depending on formative stage, i.e., speed is also:In bite stage, it is 0.3~0.7mm/ seconds to push speed, in steadily rolling rank Section, it is 0.8~1.2mm/ seconds to push speed, is terminating rolling sequence and full circle stage, and it is 0 to push speed all;

(4)In cutting, combination ring 4 is cut along the intermediate symmetry face of its upper and lower end face, as shown in Figure 5 two can be obtained A identical T section ring blank 5(Dotted line is the T section of the gained after finishing processing of T section ring blank 5 in figure The cross section contour of ring);Then T section ring blank 5 is heat-treated, finally T section ring blank 5 is carried out T section ring can be obtained after finishing processing.

In the present embodiment, the heating process of steel billet is in forging process:Steel billet obtained by blanking is lain against in heating furnace Cushion block on, in-furnace temperature≤900 DEG C when billet-charging;Then heating furnace is heated so that in-furnace temperature is with≤180 DEG C/h Rate be warming up to 1130 DEG C ± 20 DEG C after keep the temperature 2~3h, then proceed to heating so that in-furnace temperature with the rate of≤180 DEG C/h 3~4h is kept the temperature after being warming up to 1250 DEG C ± 20 DEG C.

In the present embodiment, smooth with cambered surface between the upper shell portion 11 and upper frustoconical section 12 of special-shaped core roller 1 Transition, upper frustoconical section 12 and in smoothly transitted with cambered surface between upper frustoconical section 13, it is lower fall frustoconical section Smoothly transitted with cambered surface between 15 and lower shell portion 16, in it is lower fall frustoconical section 14 and it is lower fall frustoconical section 15 it Between smoothly transitted with cambered surface;On the first of special-shaped king roller 2 on shell portion 21 and second between frustoconical section 22 with arc Face smoothly transits, and is smoothly transitted with cambered surface between frustoconical section 23 in frustoconical section 22 and third on second, third It falls frustoconical section 24 and second time down and falls and smoothly transitted with cambered surface between frustoconical section 25, second time frustum of a cone It is smoothly transitted with cambered surface between body section 25 and first time shell portion 26.Transition position is circular arc, is conducive to the flowing of metal, makes to fill Shape is more abundant, improves the dimensional accuracy of blank after rolling over ring.

In addition, the busbar of upper frustoconical section 12 and the angle of horizontal plane are 5~10 °, and preferably 7 °, butt on second The busbar of cone section 22 and the angle of horizontal plane are 5~10 °, preferably 7 °, can facilitate abnormity after rolling over ring main after being arranged in this way Roll, special-shaped core roller and ring disengage, and the flowing of metal is also helped when rolling over ring, make to fill that type is abundant, but they Angle can not be too small or excessive, and angle too small can not have the effect conducive to metal flow, and angle is excessive, can make hair obtained Base and the appearance and size for the ring of being manufactured differ greatly.In the busbar of upper frustoconical section 13 and the angle of axis be 0.5 ~2 °, preferably 0.5 °, the busbar of frustoconical section 23 and the angle of axis are 0.5~2 ° in third, preferably 0.5 °, this In capable of making after sample setting upper frustoconical section 13 and in it is lower fall frustoconical section 14 and third on frustoconical section 23 With fallen under third frustoconical section 24 intersection phase outside protrude, positioned to be conducive to ring when rolling over ring, and in ring Dent can also be left among part, be conducive to subsequently cut parting.

Claims (5)

1. the wind-powered electricity generation manufacturing process of T section ring, processing step are as follows:Blanking → forging base → rolling ring → cutting → Heat treatment → finishing processing, it is characterised in that:
(1)In blanking, the steel material of selection is: A1035;
(2)It rolles in ring, rectangle rolling is carried out first, being rolled by steel billet that is upset, being obtained after punching in forging preforming Conventional rectangular rolling is carried out using cylindrical core roller on ring machine, intermediate blank is made, wherein radial rolling power is 220~250 tons, Axial rolling force is 150~180 tons;When conventional rectangular rolls, the main rotating speed for rolling mould is 55~62 revs/min;Cylindrical core roller Translational velocity is depending on formative stage, i.e.,:In bite stage, translational velocity is 0.5~1.2mm/ seconds, in steadily rolling rank Section, translational velocity are 1.5~2.5mm/ second, are terminating rolling sequence, and translational velocity is 0.5~0.8mm/ seconds, in the full circle stage, Translational velocity is 0;The rotating speed of upper and lower cone roller is 123~185 revs/min;The pushing speed of upper cone roller be also according to formative stage and It is fixed, i.e.,:In bite stage, it is 0.3~0.7mm/ seconds to push speed, and in steady rolling sequence, pushing speed is 1.0~1.5mm/ Second, terminating rolling sequence and full circle stage, it is 0 to push speed all;Then special-shaped rolling is carried out to intermediate blank, be made by two A identical T section ring blank symmetrically overlaps the combination ring connected and composed;Firstly the need of being produced as follows tooling:Special-shaped core Roller and special-shaped king roller, special-shaped core roller from top to bottom successively by upper shell portion, upper frustoconical section, in upper truncated cone Section, in it is lower fall frustoconical section, fall frustoconical section, the coaxial arrangement of lower shell portion down into an entirety;Wherein:Upper circle The diameter of column body segment and lower shell portion is equal, upper frustoconical section and it is lower fall frustoconical section, in upper truncated cone Section and in it is lower fall frustoconical section all in upper frustoconical section and in it is lower fall frustoconical section intersection centered on Symmetrically, the minor diameter of upper frustoconical section is equal to the diameter of upper shell portion, during the major diameter of upper frustoconical section is equal to The minor diameter of upper frustoconical section;Special-shaped king roller is from top to bottom successively by frustum of a cone on shell portion on first, second In body section, third under frustoconical section, third fall frustoconical section, second time frustoconical section, first time cylinder Body section is coaxially disposed into an entirety;Wherein:The diameter of shell portion and first time shell portion is equal on first, is cut on second Head cone section and fall for second time frustoconical section, in third under frustoconical section and third frustoconical section all with Fall symmetrical, frustoconical section on second centered on the intersection of frustoconical section in third under frustoconical section and third Minor diameter be equal to the diameter of shell portion on first, the major diameter of frustoconical section is equal to frustum of a cone in third on second The minor diameter of body section;Then special-shaped rolling, diameter are carried out to intermediate blank using special-shaped core roller and special-shaped king roller on machine for rolling ring It it is 250~280 tons to roll-force, axial rolling force is 175~200 tons, and the outside of combination ring is rolled by special-shaped king roller Shape, special-shaped its interior shape of core rolling system;When abnormity rolling, the rotating speed of special-shaped king roller is 45~55 revs/min;Special-shaped core roller Translational velocity depending on formative stage, i.e.,:In bite stage, translational velocity is 0.6~0.8mm/ seconds, in steadily rolling rank Section, translational velocity are 1.1~1.5mm/ second, are terminating rolling sequence, and translational velocity is 0.3~0.7mm/ seconds, in the full circle stage, Translational velocity is 0;The rotating speed of upper and lower cone roller is 123~145 revs/min;The pushing speed of upper cone roller be also according to formative stage and It is fixed, i.e.,:In bite stage, it is 0.3~0.7mm/ seconds to push speed, and in steady rolling sequence, pushing speed is 0.8~1.2mm/ Second, terminating rolling sequence and full circle stage, it is 0 to push speed all;
(3)In cutting, combination ring is cut along the intermediate symmetry face of its upper and lower end face, two identical T shapes can be obtained Section ring parts blank.
2. the wind-powered electricity generation according to claim 1 manufacturing process of T section ring, wherein:The upper cylinder of special-shaped core roller Smoothly transitted with cambered surface between section and upper frustoconical section, upper frustoconical section and between upper frustoconical section with arc Face smoothly transits, lower to fall to smoothly transit with cambered surface between frustoconical section and lower shell portion, in it is lower fall frustoconical section It is smoothly transitted with cambered surface between lower frustoconical section;Butt is justified on shell portion and second on the first of special-shaped king roller It is smoothly transitted with cambered surface between cone segments, it is smooth with cambered surface between frustoconical section in frustoconical section and third on second Transition, the frustoconical section and falling for second time of falling under third are smoothly transitted with cambered surface between frustoconical section, and second time section It is smoothly transitted with cambered surface between head cone section and first time shell portion.
3. the wind-powered electricity generation according to claim 1 or 2 manufacturing process of T section ring, wherein:Upper frustoconical section The angle of busbar and horizontal plane is 5~10 °, and the busbar of frustoconical section and the angle of horizontal plane are 5~10 ° on second, in The busbar of upper frustoconical section and the angle of axis are 0.5~2 °, the folder of the busbar of frustoconical section and axis in third Angle is 0.5~2 °.
4. the wind-powered electricity generation according to claim 3 manufacturing process of T section ring, wherein:The mother of upper frustoconical section The angle of line and horizontal plane is 7 °, and the busbar of frustoconical section and the angle of horizontal plane are 7 ° on second, in upper frustum of a cone The busbar of body section and the angle of axis are 0.5 °, and the busbar of frustoconical section and the angle of axis are 0.5 ° in third.
5. the wind-powered electricity generation according to claim 1 or 2 manufacturing process of T section ring, wherein:Steel billet in forging process Heating process is:Steel billet obtained by blanking is lain against on the cushion block in heating furnace, in-furnace temperature≤900 DEG C when billet-charging;So Heating furnace is heated afterwards so that and in-furnace temperature keeps the temperature 2~3h after being warming up to 1130 DEG C ± 20 DEG C with the rate of≤180 DEG C/h, Heating is then proceeded to so that in-furnace temperature keeps the temperature 3~4h after being warming up to 1250 DEG C ± 20 DEG C with the rate of≤180 DEG C/h.
CN201810202910.6A 2018-03-13 2018-03-13 The manufacturing process of wind-powered electricity generation T section ring CN108274204A (en)

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JPS59201726A (en) * 1983-04-28 1984-11-15 Toyo Sangyo Kk Manufacture of semi-circular parts having finishing margins at both ends
JP2007040370A (en) * 2005-08-02 2007-02-15 Nippon Brake Kogyo Kk Method for manufacturing ring-like brake shoe
CN101811246A (en) * 2010-04-02 2010-08-25 张家港海陆环形锻件有限公司 Production method of wind tower flange deformed ring forging
CN102172734A (en) * 2010-12-31 2011-09-07 莫亚夫 Rolling blank making method for automobile transmission gear ring
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CN104139280A (en) * 2014-06-30 2014-11-12 张家港海陆环形锻件有限公司 Manufacturing process for wheel hubs
CN104139279A (en) * 2014-06-30 2014-11-12 张家港海陆环形锻件有限公司 Manufacturing process for inner-trapezoid-groove ring piece
CN107695280A (en) * 2017-09-20 2018-02-16 襄阳润欣圆锻造有限公司 T section annular forging piece forming process of roll milling

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