CN104139279A - Manufacturing process for inner-trapezoid-groove ring piece - Google Patents
Manufacturing process for inner-trapezoid-groove ring piece Download PDFInfo
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- CN104139279A CN104139279A CN201410298679.7A CN201410298679A CN104139279A CN 104139279 A CN104139279 A CN 104139279A CN 201410298679 A CN201410298679 A CN 201410298679A CN 104139279 A CN104139279 A CN 104139279A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
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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
- B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
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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
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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
- B21J3/00—Lubricating during forging or pressing
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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
- 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
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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
- 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
- B21J5/10—Piercing billets
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- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a manufacturing process for an inner-trapezoid-groove ring piece. The process comprises the following steps of blanking, forging to prepare a blank and rolling into a ring, annealing, and performing finish turning, and is characterized in that (1) the process of forging to prepare the blank and rolling into the ring comprises a procedure of forging an initial blank and a procedure of rolling the initial blank into the ring, namely punching by using an upper punch and a lower punch to obtain the initial blank, performing conventional rectangular rolling on the initial blank to obtain a middle blank, and performing special rolling on the middle blank by using a special main rolling die and a special core roller; (2) in annealing, the blank of the inner-trapezoid-groove ring piece is heated to the temperature between 400 and 500DEG C from the normal temperature at a rate of 130-155DEG C per hour, keeping the temperature for 2 to 4 hours and performing air cooling. The manufacturing process has the advantages that reasonable process steps and die tooling are adopted, the mechanical properties and the dimensional stability of the blank of the inner-trapezoid-groove ring piece are improved, the difficulty of the finish turning and the consumption of raw materials are reduced, the production efficiency is improved and the production cost is reduced.
Description
Technical field
The present invention relates to the manufacturing process of interior trapezoidal grooved ring shape part, belong to the ring processing and manufacturing field of rolling over of forging.
Background technology
The application at home and abroad of interior trapezoidal grooved ring shape part is very extensive, especially aspect engineering mechanical device, has wide prospect, is the important component part of mine mechanism.At present, the production method of interior trapezoidal grooved ring shape part is: take base steel as raw material, through blanking, forging base, roll over ring, make interior trapezoidal grooved ring shape part blank, then, after heat treatment, finish turning processing, obtain interior trapezoidal grooved ring shape part; Forging base is wherein rolled over ring process and is conventionally divided into again two step operations, forges just blank process and rolles over ring operation with first base.The major defect that current production method exists is: it is not too reasonable that the first base of forging and just base are rolled over the production process of encircling, causing rolling over the poor and size of blank of the mechanical performance of the blank that ring makes and the profile of the finished parts of wanting differs greatly, strengthened the difficulty of finish turning processing, consumption of raw materials is more, reduce production efficiency, increased production cost.
Summary of the invention
Defect in view of above-mentioned prior art existence, technical problem to be solved by this invention is: the manufacturing process that a kind of interior trapezoidal grooved ring shape part is provided, in improving, mechanical performance and the dimensional stability of trapezoidal grooved ring shape part blank, to reduce the difficulty of finish turning processing, enhance productivity.
Object of the present invention, will be achieved by the following technical programs: the manufacturing process of interior trapezoidal grooved ring shape part, and its processing step is as follows: blanking → forging base is rolled over the processing of ring → annealing → finish turning, is characterized in:
(1) in forging base rolling ring process, be divided into and forge just base and two operations of just base rolling ring, forge first base step as follows: a. is first produced as follows frock: upper punch and low punch, upper punch is coaxially arranged to an integral body by falling frustoconical section and shell portion from top to bottom successively, and the minor diameter of frustoconical section of falling equals the diameter of shell portion, low punch is truncated cone, the diameter of the shell portion of upper punch is not less than the minor diameter of the truncated cone of low punch, b. blanking gained base steel on hydraulic press, with 2800～3200 tons of pressure, carry out jumping-up, c. on low punch and upper punch, smear respectively the lubricant that carbon dust and machine tool lubrication oil mix with 1:1.5～1:2.5 ratio, d. on hydraulic press, with 2800～3200 tons of pressure with low punch blind hole under the base steel drift after to jumping-up, lower blind hole is in the form of a truncated cone and coaxial with base steel, and then with 2800～3200 tons of pressure with upper punch to open-work on base steel drift, upper open-work and lower blind hole are coaxial and be communicated with, finally with 2800～3200 tons of pressure, using chopping block, that base steel is carried out to upsetting is flat, makes just base, just base rolling ring step is as follows: at the beginning of a., base carries out conventional rectangle rolling on machine for rolling ring, blank in the middle of making, and wherein radial rolling power is 160～190 tons, axial rolling force is 120～140 tons, during conventional rectangle rolling, the main rotating speed that rolls mould is 20～25 revs/min, the point-to-point speed of core roller is determined according to formative stage, that is:, at bite stage, point-to-point speed is 2.5～3.5mm/ second, at steady rolling sequence, point-to-point speed is 1～2mm/ second, is finishing rolling sequence, point-to-point speed is 0.75～1.25mm/ second, and in the full circle stage, point-to-point speed is 0, the rotating speed of upper and lower cone roller is 35～45 revs/min, the speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.25～0.75mm/ second, and at steady rolling sequence, the speed of pressing down is 1～2mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0, b. middle blank is carried out to special-shaped rolling, make interior trapezoidal grooved ring shape part blank, first need to be produced as follows frock: abnormity is main rolls mould and special-shaped core roller, and special-shaped core roller is cylinder, and the diameter of the shell portion of upper punch is greater than the diameter of special-shaped core roller, abnormity is main rolls mould from top to bottom successively by upper shell portion, upper frustoconical section, upper inner cylinder section, middle cone section, middle shell portion, fall down frustoconical section, lower inner cylinder section, lower cone section and lower shell portion are coaxially arranged to an integral body, the diameter of wherein going up shell portion equals the diameter of lower shell portion, and on, the diameter of lower shell portion is greater than the diameter of middle shell portion, the diameter of middle shell portion is greater than, the diameter of lower inner cylinder section, on, the equal diameters of lower inner cylinder section, the minor diameter of upper frustoconical section and upper, the diameter of lower inner cylinder section, the minor diameter of middle cone section, fall down the minor diameter of frustoconical section, the minor diameter of lower cone section all equates, the major diameter of middle cone section, the diameter of middle shell portion and the lower major diameter of frustoconical section all equate, the major diameter of lower cone section, the upper major diameter of frustoconical section and the diameter of lower shell portion all equate, then on machine for rolling ring, carry out special-shaped rolling, radial rolling power is 235～265 tons, and axial rolling force is 90～110 tons, rolls the external shape of trapezoidal grooved ring shape part blank in mould rolling by abnormity master, special-shaped its interior shape of core rolling system, during abnormity rolling, the main rotating speed that rolls mould of abnormity is 22～24 revs/min, the point-to-point speed of abnormity core roller is determined according to formative stage, that is:, at bite stage, point-to-point speed is 2～3mm/ second, at steady rolling sequence, point-to-point speed is 1～1.5mm/ second, is finishing rolling sequence, point-to-point speed is 0.5～1mm/ second, and in the full circle stage, point-to-point speed is 0, the rotating speed of upper and lower cone roller is 38～42 revs/min, the speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.3～0.7mm/ second, and at steady rolling sequence, the speed of pressing down is 1～2mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0,
(2) in annealing operation, interior trapezoidal grooved ring shape part blank, at normal temperatures, with 130～155 ℃/time speed be warming up to 400～500 ℃, be incubated 2～4 hours, then air cooling.
Further, the manufacturing process of aforesaid interior trapezoidal grooved ring shape part, wherein: in blanking procedure, the round steel that the trade mark of take is 16MnD, φ 600 is raw material.
Further, the manufacturing process of aforesaid interior trapezoidal grooved ring shape part, wherein: the diameter of the shell portion of described upper punch equals the minor diameter of the truncated cone of low punch.
Further, the manufacturing process of aforesaid interior trapezoidal grooved ring shape part, wherein: main upper shell portion and the upper transition position between frustoconical section that rolls mould of described abnormity is circular arc; Transition position between lower shell portion and lower cone section is circular arc; Transition position between upper inner cylinder section and middle cone section is circular arc; Transition position between middle shell portion and middle cone section is circular arc; Middle shell portion and the lower transition position between frustoconical section are circular arc; The transition position falling between frustoconical section and lower inner cylinder section is down circular arc.
Further, the manufacturing process of aforesaid interior trapezoidal grooved ring shape part, wherein: main upper frustoconical section, the bus of lower cone section and the angle of horizontal plane that rolls mould of described abnormity is 3～10 degree, is preferably 7 degree.
Beneficial effect of the present invention is: mechanical performance and the dimensional stability of trapezoidal grooved ring shape part blank in worker artistic skill of the present invention improves, reduce the difficulty of finish turning processing and the loss of raw material, and improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of upper punch.
Fig. 2 is the structural representation of low punch.
Fig. 3 is the main structural representation that rolls mould of abnormity.
Fig. 4 is the structural representation of special-shaped core roller.
Fig. 5 is the structural representation of first base.
Fig. 6 is the structural representation of middle blank.
Fig. 7 is the structural representation of interior trapezoidal grooved ring shape part blank.
The specific embodiment
Below by specific embodiments and the drawings, the present invention is described in further detail.
Embodiment 1
The manufacturing process of interior trapezoidal grooved ring shape part, its processing step is as follows: blanking → forging base is rolled over the processing of ring → annealing → finish turning, is characterized in:
(1), in blanking procedure, the round steel that the trade mark of take is 42CrMo, φ 800 is as raw material is in cutting machine loading and unloading;
(2) roll in ring process forging base, initial forging temperature is not more than 1250 ℃, and final forging temperature is not less than 850 ℃, the rate of heat addition be 125 ℃/time, Forge Heating holding temperature is 1230 ℃, forging ratio is 5, forge base rolling ring process and comprise that the first base of forging and just base rolling encircle two operations, forge first base step as follows: a. is first produced as follows frock: upper punch 1 and low punch 2, as depicted in figs. 1 and 2, upper punch 1 is coaxially arranged to an integral body by falling frustoconical section 11 and shell portion 12 from top to bottom successively, and the minor diameter of frustoconical section 11 of falling equals the diameter of shell portion 12, low punch 2 is truncated cone, the diameter of the shell portion 12 of upper punch 1 is not less than the minor diameter of the truncated cone of low punch 2, and the diameter that is preferably the shell portion 12 of upper punch 1 equals the minor diameter of the truncated cone of low punch 2, b. blanking gained base steel on 3500 tons of hydraulic presses, with 3200 tons of pressure, carry out jumping-up, c. on upper punch 1 and low punch 2, smear respectively the lubricant that carbon dust and machine tool lubrication oil (Great Wall L-HG32 hydraulic guide rail oil) mix with 1:1.5 ratio, lubricant can make punching smooth, reduces the resistance of punching, makes its moulding abundant, d. as shown in Figure 5, on 3500 tons of hydraulic presses, with blind hole 51 under the base steel drift after 2 pairs of jumping-ups of low punch for 3200 tons of pressure, lower blind hole 51 in the form of a truncated cone and coaxial with base steel, lower blind hole in the form of a truncated cone, is that the demoulding is more convenient for after sweeping away blind hole and completing, and then with open-work 52 on 1 pair of base steel drift of upper punch for 2800 tons of pressure, the coaxial also connection of upper open-work 52 and lower blind hole 51, finally with 2800 tons of pressure, using chopping block, that base steel is carried out to upsetting is flat, makes just base 5, just base rolling ring step is as follows: at the beginning of a., base 5 carries out conventional rectangle rolling on 4500mm machine for rolling ring, makes middle blank 6 as shown in Figure 6, and wherein radial rolling power is 160 tons, and axial rolling force is 120 tons, during conventional rectangle rolling, the main rotating speed that rolls mould is 25 revs/min, the point-to-point speed of core roller is determined according to formative stage, that is:, at bite stage, point-to-point speed is 3.5mm/ second, and at steady rolling sequence, point-to-point speed is 2mm/ second, is finishing rolling sequence, and point-to-point speed is 0.75mm/ second, and in the full circle stage, point-to-point speed is 0, the rotating speed of upper and lower cone roller is 35 revs/min, the speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.75mm/ second, and at steady rolling sequence, the speed of pressing down is 2mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0, first carry out conventional rectangle rolling, can play preformed effect, make follow-up special-shaped rolling, moulding is more abundant, b. middle blank 6 is carried out to special-shaped rolling, make interior trapezoidal grooved ring shape part blank 7 as shown in Figure 7, first need to be produced as follows frock: main mould 3 and the special-shaped core roller 4 of rolling of abnormity, as shown in Figure 3 and Figure 4, abnormity core roller 4 is cylinder, the diameter of the shell portion 12 of upper punch 1 is greater than the diameter of special-shaped core roller 4, because only in this way, special-shaped core roller 4 could be extend in the blank after upper punch 1 punching, abnormity is main rolls mould 3 from top to bottom successively by upper shell portion 31, upper frustoconical section 32, upper inner cylinder section 33, middle cone section 34, middle shell portion 35, fall down frustoconical section 36, lower inner cylinder section 37, lower cone section 38 and lower shell portion 39 are coaxially arranged to an integral body, and the diameter of wherein going up shell portion 31 equals the diameter of lower shell portion 39, and on, lower shell portion 31, 39 diameter is greater than the diameter of middle shell portion 35, and the diameter of middle shell portion 35 is greater than, lower inner cylinder section 33, 37 diameter, on, lower inner cylinder section 33, 37 equal diameters, above falls the minor diameter of frustoconical section 32 and upper, lower inner cylinder section 33, 37 diameter, the minor diameter of middle cone section 34, fall down the minor diameter of frustoconical section 36, the minor diameter of lower cone section 38 all equates, the major diameter of middle cone section 34, the diameter of middle shell portion 35 and the lower major diameter of frustoconical section 36 all equate, the major diameter of lower cone section 38, the upper major diameter of frustoconical section 32 and the diameter of lower shell portion 39 all equate, the upper shell portion 31 and the lower shell portion 39 that on special-shaped king roller 3, arrange can form an enclosed die cavity with blank when rolling over ring, make blank roll over while encircling play up and down, have guaranteed the stability of size.Then on 4500mm machine for rolling ring, carry out special-shaped rolling, radial rolling power is 265 tons, and axial rolling force is 110 tons, rolls the external shape of trapezoidal grooved ring shape part blank 7 in mould 3 rollings by abnormity master, special-shaped its interior shape of core roller 4 rollings; During abnormity rolling, the main rotating speed that rolls mould 3 of abnormity is 22 revs/min; The point-to-point speed of abnormity core roller 4 is determined according to formative stage, that is:, at bite stage, point-to-point speed is 2mm/ second, and at steady rolling sequence, point-to-point speed is 1mm/ second, is finishing rolling sequence, and point-to-point speed is 1mm/ second, and in the full circle stage, point-to-point speed is 0; The rotating speed of upper and lower cone roller is 42 revs/min; The speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.7mm/ second, and at steady rolling sequence, the speed of pressing down is 2mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0;
(3) in annealing operation, interior trapezoidal grooved ring shape part blank 7, at normal temperatures, with 130 ℃/time speed be warming up to 500 ℃, be incubated 4 hours, then air cooling.
In the present embodiment, main upper shell portion 31 and the upper transition position between frustoconical section 32 that rolls mould 3 of described abnormity is circular arc; Transition position between lower shell portion 39 and lower cone section 38 is circular arc; Transition position between upper inner cylinder section 33 and middle cone section 34 is circular arc; Transition position between middle shell portion 35 and middle cone section 34 is circular arc; Middle shell portion 35 and the lower transition position between frustoconical section 36 are circular arc; The transition position falling between frustoconical section 36 and lower inner cylinder section 37 is down circular arc.Transition position is circular arc, is conducive to flowing of metal, makes to fill shape more abundant, has improved the dimensional stability of rolling over the rear blank of ring.
In the present embodiment, main upper frustoconical section 32, the bus of lower cone section 38 and the angle of horizontal plane that rolls mould 3 of described abnormity is 3～10 degree, is preferably 7 degree.There is an angle with horizontal plane in upper frustoconical section 32, lower cone section 38, can when rolling over ring, to charging, play guide effect, but angle too small can be unfavorable for the plastic deformation of metal, and angle is too large, can cause wasting material.
Embodiment 2
The manufacturing process of interior trapezoidal grooved ring shape part, its processing step is as follows: blanking → forging base is rolled over the processing of ring → annealing → finish turning, is characterized in:
(1), in blanking procedure, the round steel that the trade mark of take is 16MnD, φ 600 is as raw material is in cutting machine loading and unloading;
(2) roll in ring process forging base, initial forging temperature is not more than 1250 ℃, and final forging temperature is not less than 850 ℃, the rate of heat addition be 145 ℃/time, Forge Heating holding temperature is 1250 ℃, forging ratio is 6, forge base rolling ring process and comprise that the first base of forging and just base rolling encircle two operations, forge first base step as follows: a. is first produced as follows frock: upper punch 1 and low punch 2, as depicted in figs. 1 and 2, upper punch 1 is coaxially arranged to an integral body by falling frustoconical section 11 and shell portion 12 from top to bottom successively, and the minor diameter of frustoconical section 11 of falling equals the diameter of shell portion 12, low punch 2 is truncated cone, the diameter of the shell portion 12 of upper punch 1 is not less than the minor diameter of the truncated cone of low punch 2, and the diameter that is preferably the shell portion 12 of upper punch 1 equals the minor diameter of the truncated cone of low punch 2, b. blanking gained base steel on 3500 tons of hydraulic presses, with 3000 tons of pressure, carry out jumping-up, c. on upper punch 1 and low punch 2, smear respectively the lubricant that carbon dust and machine tool lubrication oil (Haas is No. 68 rail oils too) mix with 1:2 ratio, lubricant can make punching smooth, reduces the resistance of punching, makes its moulding abundant, d. as shown in Figure 5, on 3500 tons of hydraulic presses, with blind hole 51 under the base steel drift after 2 pairs of jumping-ups of low punch for 3000 tons of pressure, lower blind hole 51 in the form of a truncated cone and coaxial with base steel, lower blind hole in the form of a truncated cone, is that the demoulding is more convenient for after sweeping away blind hole and completing, and then with open-work 52 on 1 pair of base steel drift of upper punch for 3000 tons of pressure, the coaxial also connection of upper open-work 52 and lower blind hole 51, finally with 3000 tons of pressure, using chopping block, that base steel is carried out to upsetting is flat, makes just base 5, just base rolling ring step is as follows: at the beginning of a., base 5 carries out conventional rectangle rolling on 4500mm machine for rolling ring, makes middle blank 6 as shown in Figure 6, and wherein radial rolling power is 175 tons, and axial rolling force is 130 tons, during conventional rectangle rolling, the main rotating speed that rolls mould is 22.5 revs/min, the point-to-point speed of core roller is determined according to formative stage, that is:, at bite stage, point-to-point speed is 3mm/ second, and at steady rolling sequence, point-to-point speed is 1.5mm/ second, is finishing rolling sequence, and point-to-point speed is 1mm/ second, and in the full circle stage, point-to-point speed is 0, the rotating speed of upper and lower cone roller is 40 revs/min, the speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.5mm/ second, and at steady rolling sequence, the speed of pressing down is 1.5mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0, first carry out conventional rectangle rolling, can play preformed effect, make follow-up special-shaped rolling, moulding is more abundant, b. middle blank 6 is carried out to special-shaped rolling, make interior trapezoidal grooved ring shape part blank 7 as shown in Figure 7, first need to be produced as follows frock: main mould 3 and the special-shaped core roller 4 of rolling of abnormity, as shown in Figure 3 and Figure 4, abnormity core roller 4 is cylinder, the diameter of the shell portion 12 of upper punch 1 is greater than the diameter of special-shaped core roller 4, because only in this way, special-shaped core roller 4 could be extend in the blank after upper punch 1 punching, abnormity is main rolls mould 3 from top to bottom successively by upper shell portion 31, upper frustoconical section 32, upper inner cylinder section 33, middle cone section 34, middle shell portion 35, fall down frustoconical section 36, lower inner cylinder section 37, lower cone section 38 and lower shell portion 39 are coaxially arranged to an integral body, and the diameter of wherein going up shell portion 31 equals the diameter of lower shell portion 39, and on, lower shell portion 31, 39 diameter is greater than the diameter of middle shell portion 35, and the diameter of middle shell portion 35 is greater than, lower inner cylinder section 33, 37 diameter, on, lower inner cylinder section 33, 37 equal diameters, above falls the minor diameter of frustoconical section 32 and upper, lower inner cylinder section 33, 37 diameter, the minor diameter of middle cone section 34, fall down the minor diameter of frustoconical section 36, the minor diameter of lower cone section 38 all equates, the major diameter of middle cone section 34, the diameter of middle shell portion 35 and the lower major diameter of frustoconical section 36 all equate, the major diameter of lower cone section 38, the upper major diameter of frustoconical section 32 and the diameter of lower shell portion 39 all equate, the upper shell portion 31 and the lower shell portion 39 that on special-shaped king roller 3, arrange can form an enclosed die cavity with blank when rolling over ring, make blank roll over while encircling play up and down, have guaranteed the stability of size.Then on 4500mm machine for rolling ring, carry out special-shaped rolling, radial rolling power is 250 tons, and axial rolling force is 100 tons, rolls the external shape of trapezoidal grooved ring shape part blank 7 in mould 3 rollings by abnormity master, special-shaped its interior shape of core roller 4 rollings; During abnormity rolling, the main rotating speed that rolls mould 3 of abnormity is 23 revs/min; The point-to-point speed of abnormity core roller 4 is determined according to formative stage, that is:, at bite stage, point-to-point speed is 2.5mm/ second, at steady rolling sequence, point-to-point speed is 1.2mm/ second, is finishing rolling sequence, point-to-point speed is 0.8mm/ second, and in the full circle stage, point-to-point speed is 0; The rotating speed of upper and lower cone roller is 41 revs/min; The speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.5mm/ second, and at steady rolling sequence, the speed of pressing down is 1.5mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0;
(3) in annealing operation, interior trapezoidal grooved ring shape part blank 7, at normal temperatures, with 140 ℃/time speed be warming up to 450 ℃, be incubated 3 hours, then air cooling.
In the present embodiment, main upper shell portion 31 and the upper transition position between frustoconical section 32 that rolls mould 3 of described abnormity is circular arc; Transition position between lower shell portion 39 and lower cone section 38 is circular arc; Transition position between upper inner cylinder section 33 and middle cone section 34 is circular arc; Transition position between middle shell portion 35 and middle cone section 34 is circular arc; Middle shell portion 35 and the lower transition position between frustoconical section 36 are circular arc; The transition position falling between frustoconical section 36 and lower inner cylinder section 37 is down circular arc.Transition position is circular arc, is conducive to flowing of metal, makes to fill shape more abundant, has improved the dimensional stability of rolling over the rear blank of ring.
In the present embodiment, main upper frustoconical section 32, the bus of lower cone section 38 and the angle of horizontal plane that rolls mould 3 of described abnormity is 3～10 degree, is preferably 7 degree.There is an angle with horizontal plane in upper frustoconical section 32, lower cone section 38, can when rolling over ring, to charging, play guide effect, but angle too small can be unfavorable for the plastic deformation of metal, and angle is too large, can cause wasting material.
Embodiment 3
The manufacturing process of interior trapezoidal grooved ring shape part, its processing step is as follows: blanking → forging base is rolled over the processing of ring → annealing → finish turning, is characterized in:
(1), in blanking procedure, the round steel that the trade mark of take is 45#, φ 500 is as raw material is in cutting machine loading and unloading;
(2) roll in ring process forging base, initial forging temperature is not more than 1250 ℃, and final forging temperature is not less than 850 ℃, the rate of heat addition be 165 ℃/time, Forge Heating holding temperature is 1270 ℃, forging ratio is 7, forge base rolling ring process and comprise that the first base of forging and just base rolling encircle two operations, forge first base step as follows: a. is first produced as follows frock: upper punch 1 and low punch 2, as depicted in figs. 1 and 2, upper punch 1 is coaxially arranged to an integral body by falling frustoconical section 11 and shell portion 12 from top to bottom successively, and the minor diameter of frustoconical section 11 of falling equals the diameter of shell portion 12, low punch 2 is truncated cone, the diameter of the shell portion 12 of upper punch 1 is not less than the minor diameter of the truncated cone of low punch 2, and the diameter that is preferably the shell portion 12 of upper punch 1 equals the minor diameter of the truncated cone of low punch 2, b. blanking gained base steel on 3500 tons of hydraulic presses, with 2800 tons of pressure, carry out jumping-up, c. on upper punch 1 and low punch 2, smear respectively the lubricant that carbon dust and machine tool lubrication oil (Mobil Weida guide track series oil) mix with 1:2.5 ratio, lubricant can make punching smooth, reduces the resistance of punching, makes its moulding abundant, d. as shown in Figure 5, on 3500 tons of hydraulic presses, with blind hole 51 under the base steel drift after 2 pairs of jumping-ups of low punch for 2800 tons of pressure, lower blind hole 51 in the form of a truncated cone and coaxial with base steel, lower blind hole in the form of a truncated cone, is that the demoulding is more convenient for after sweeping away blind hole and completing, and then with open-work 52 on 1 pair of base steel drift of upper punch for 3200 tons of pressure, the coaxial also connection of upper open-work 52 and lower blind hole 51, finally with 3200 tons of pressure, using chopping block, that base steel is carried out to upsetting is flat, makes just base 5, just base rolling ring step is as follows: at the beginning of a., base 5 carries out conventional rectangle rolling on 4500mm machine for rolling ring, makes middle blank 6 as shown in Figure 6, and wherein radial rolling power is 190 tons, and axial rolling force is 140 tons, during conventional rectangle rolling, the main rotating speed that rolls mould is 20 revs/min, the point-to-point speed of core roller is determined according to formative stage, that is:, at bite stage, point-to-point speed is 2.7mm/ second, and at steady rolling sequence, point-to-point speed is 1.3mm/ second, is finishing rolling sequence, and point-to-point speed is 1.25mm/ second, and in the full circle stage, point-to-point speed is 0, the rotating speed of upper and lower cone roller is 45 revs/min, the speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.4mm/ second, and at steady rolling sequence, the speed of pressing down is 1mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0, first carry out conventional rectangle rolling, can play preformed effect, make follow-up special-shaped rolling, moulding is more abundant, b. middle blank 6 is carried out to special-shaped rolling, make interior trapezoidal grooved ring shape part blank 7 as shown in Figure 7, first need to be produced as follows frock: main mould 3 and the special-shaped core roller 4 of rolling of abnormity, as shown in Figure 3 and Figure 4, abnormity core roller 4 is cylinder, the diameter of the shell portion 12 of upper punch 1 is greater than the diameter of special-shaped core roller 4, because only in this way, special-shaped core roller 4 could be extend in the blank after upper punch 1 punching, abnormity is main rolls mould 3 from top to bottom successively by upper shell portion 31, upper frustoconical section 32, upper inner cylinder section 33, middle cone section 34, middle shell portion 35, fall down frustoconical section 36, lower inner cylinder section 37, lower cone section 38 and lower shell portion 39 are coaxially arranged to an integral body, and the diameter of wherein going up shell portion 31 equals the diameter of lower shell portion 39, and on, lower shell portion 31, 39 diameter is greater than the diameter of middle shell portion 35, and the diameter of middle shell portion 35 is greater than, lower inner cylinder section 33, 37 diameter, on, lower inner cylinder section 33, 37 equal diameters, above falls the minor diameter of frustoconical section 32 and upper, lower inner cylinder section 33, 37 diameter, the minor diameter of middle cone section 34, fall down the minor diameter of frustoconical section 36, the minor diameter of lower cone section 38 all equates, the major diameter of middle cone section 34, the diameter of middle shell portion 35 and the lower major diameter of frustoconical section 36 all equate, the major diameter of lower cone section 38, the upper major diameter of frustoconical section 32 and the diameter of lower shell portion 39 all equate, the upper shell portion 31 and the lower shell portion 39 that on special-shaped king roller 3, arrange can form an enclosed die cavity with blank when rolling over ring, make blank roll over while encircling play up and down, have guaranteed the stability of size.Then on 4500mm machine for rolling ring, carry out special-shaped rolling, radial rolling power is 235 tons, and axial rolling force is 90 tons, rolls the external shape of trapezoidal grooved ring shape part blank 7 in mould 3 rollings by abnormity master, special-shaped its interior shape of core roller 4 rollings; During abnormity rolling, the main rotating speed that rolls mould 3 of abnormity is 24 revs/min; The point-to-point speed of abnormity core roller 4 is determined according to formative stage, that is:, at bite stage, point-to-point speed is 3mm/ second, and at steady rolling sequence, point-to-point speed is 1.5mm/ second, is finishing rolling sequence, and point-to-point speed is 1mm/ second, and in the full circle stage, point-to-point speed is 0; The rotating speed of upper and lower cone roller is 38 revs/min; The speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.4mm/ second, and at steady rolling sequence, the speed of pressing down is 1mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0;
(3) in annealing operation, interior trapezoidal grooved ring shape part blank 7, at normal temperatures, with 155 ℃/time speed be warming up to 400 ℃, be incubated 2.5 hours, then air cooling.
In the present embodiment, main upper shell portion 31 and the upper transition position between frustoconical section 32 that rolls mould 3 of described abnormity is circular arc; Transition position between lower shell portion 39 and lower cone section 38 is circular arc; Transition position between upper inner cylinder section 33 and middle cone section 34 is circular arc; Transition position between middle shell portion 35 and middle cone section 34 is circular arc; Middle shell portion 35 and the lower transition position between frustoconical section 36 are circular arc; The transition position falling between frustoconical section 36 and lower inner cylinder section 37 is down circular arc.Transition position is circular arc, is conducive to flowing of metal, makes to fill shape more abundant, has improved the dimensional stability of rolling over the rear blank of ring.
In the present embodiment, main upper frustoconical section 32, the bus of lower cone section 38 and the angle of horizontal plane that rolls mould 3 of described abnormity is 3～10 degree, is preferably 7 degree.There is an angle with horizontal plane in upper frustoconical section 32, lower cone section 38, can when rolling over ring, to charging, play guide effect, but angle too small can be unfavorable for the plastic deformation of metal, and angle is too large, can cause wasting material.
Beneficial effect of the present invention is: manufacturing process of the present invention has adopted rational processing step and mold tooling, mechanical performance and the dimensional stability of trapezoidal grooved ring shape part blank in having improved, the difficulty of finish turning processing and the consumption of raw material have been reduced, improve production efficiency, reduced production cost.
Claims (6)
1. the manufacturing process of interior trapezoidal grooved ring shape part, its processing step is as follows: blanking → forging base is rolled over ring → annealing → finish turning and processed, and it is characterized in that:
(1) in forging base rolling ring process, be divided into and forge just base and two operations of just base rolling ring, forge first base step as follows: a. is first produced as follows frock: upper punch and low punch, upper punch is coaxially arranged to an integral body by falling frustoconical section and shell portion from top to bottom successively, and the minor diameter of frustoconical section of falling equals the diameter of shell portion, low punch is truncated cone, the diameter of the shell portion of upper punch is not less than the minor diameter of the truncated cone of low punch, b. blanking gained base steel on hydraulic press, with 2800～3200 tons of pressure, carry out jumping-up, c. on low punch and upper punch, smear respectively the lubricant that carbon dust and machine tool lubrication oil mix with 1:1.5～1:2.5 ratio, d. on hydraulic press, with 2800～3200 tons of pressure with low punch blind hole under the base steel drift after to jumping-up, lower blind hole is in the form of a truncated cone and coaxial with base steel, and then with 2800～3200 tons of pressure with upper punch to open-work on base steel drift, upper open-work and lower blind hole are coaxial and be communicated with, finally with 2800～3200 tons of pressure, using chopping block, that base steel is carried out to upsetting is flat, makes just base, just base rolling ring step is as follows: at the beginning of a., base carries out conventional rectangle rolling on machine for rolling ring, blank in the middle of making, and wherein radial rolling power is 160～190 tons, axial rolling force is 120～140 tons, during conventional rectangle rolling, the main rotating speed that rolls mould is 20～25 revs/min, the point-to-point speed of core roller is determined according to formative stage, that is:, at bite stage, point-to-point speed is 2.5～3.5mm/ second, at steady rolling sequence, point-to-point speed is 1～2mm/ second, is finishing rolling sequence, point-to-point speed is 0.75～1.25mm/ second, and in the full circle stage, point-to-point speed is 0, the rotating speed of upper and lower cone roller is 35～45 revs/min, the speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.25～0.75mm/ second, and at steady rolling sequence, the speed of pressing down is 1～2mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0, b. middle blank is carried out to special-shaped rolling, make interior trapezoidal grooved ring shape part blank, first need to be produced as follows frock: abnormity is main rolls mould and special-shaped core roller, and special-shaped core roller is cylinder, and the diameter of the shell portion of upper punch is greater than the diameter of special-shaped core roller, abnormity is main rolls mould from top to bottom successively by upper shell portion, upper frustoconical section, upper inner cylinder section, middle cone section, middle shell portion, fall down frustoconical section, lower inner cylinder section, lower cone section and lower shell portion are coaxially arranged to an integral body, the diameter of wherein going up shell portion equals the diameter of lower shell portion, and on, the diameter of lower shell portion is greater than the diameter of middle shell portion, the diameter of middle shell portion is greater than, the diameter of lower inner cylinder section, on, the equal diameters of lower inner cylinder section, the minor diameter of upper frustoconical section and upper, the diameter of lower inner cylinder section, the minor diameter of middle cone section, fall down the minor diameter of frustoconical section, the minor diameter of lower cone section all equates, the major diameter of middle cone section, the diameter of middle shell portion and the lower major diameter of frustoconical section all equate, the major diameter of lower cone section, the upper major diameter of frustoconical section and the diameter of lower shell portion all equate, then on machine for rolling ring, carry out special-shaped rolling, radial rolling power is 235～265 tons, and axial rolling force is 90～110 tons, rolls the external shape of trapezoidal grooved ring shape part blank in mould rolling by abnormity master, special-shaped its interior shape of core rolling system, during abnormity rolling, the main rotating speed that rolls mould of abnormity is 22～24 revs/min, the point-to-point speed of abnormity core roller is determined according to formative stage, that is:, at bite stage, point-to-point speed is 2～3mm/ second, at steady rolling sequence, point-to-point speed is 1～1.5mm/ second, is finishing rolling sequence, point-to-point speed is 0.5～1mm/ second, and in the full circle stage, point-to-point speed is 0, the rotating speed of upper and lower cone roller is 38～42 revs/min, the speed that presses down of epicone roller is also to determine according to formative stage, that is:, at bite stage, the speed of pressing down is 0.3～0.7mm/ second, and at steady rolling sequence, the speed of pressing down is 1～2mm/ second, is finishing rolling sequence and full circle stage, and the speed that presses down is all 0,
(2) in annealing operation, interior trapezoidal grooved ring shape part blank, at normal temperatures, with 130～155 ℃/time speed be warming up to 400～500 ℃, be incubated 2～4 hours, then air cooling.
2. the manufacturing process of interior trapezoidal grooved ring shape part according to claim 1, is characterized in that: in blanking procedure, the round steel that the trade mark of take is 16MnD, φ 600 is raw material.
3. the manufacturing process of interior trapezoidal grooved ring shape part according to claim 1, is characterized in that: the diameter of the shell portion of described upper punch equals the minor diameter of the truncated cone of low punch.
4. according to the manufacturing process of the interior trapezoidal grooved ring shape part described in claim 1 or 3, it is characterized in that: main upper shell portion and the upper transition position between frustoconical section that rolls mould of described abnormity is circular arc; Transition position between lower shell portion and lower cone section is circular arc; Transition position between upper inner cylinder section and middle cone section is circular arc; Transition position between middle shell portion and middle cone section is circular arc; Middle shell portion and the lower transition position between frustoconical section are circular arc; The transition position falling between frustoconical section and lower inner cylinder section is down circular arc.
5. according to the manufacturing process of the interior trapezoidal grooved ring shape part described in claim 1 or 3, it is characterized in that: main upper frustoconical section, the bus of lower cone section and the angle of horizontal plane that rolls mould of described abnormity is 3～10 degree.
6. the manufacturing process of interior trapezoidal grooved ring shape part according to claim 5, is characterized in that: main upper frustoconical section, the bus of lower cone section and the angle of horizontal plane that rolls mould of described abnormity is 7 degree.
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| CN108274204A (en) * | 2018-03-13 | 2018-07-13 | 张家港中环海陆特锻股份有限公司 | The manufacturing process of wind-powered electricity generation T section ring |
| CN108580768A (en) * | 2018-04-10 | 2018-09-28 | 张家港中环海陆特锻股份有限公司 | The manufacturing process of the pure titanium sheath forging of ocean engineering |
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| CN108817093A (en) * | 2018-04-27 | 2018-11-16 | 马兴法 | A kind of special-shaped ring blank forming method |
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| CN111036808A (en) * | 2019-12-31 | 2020-04-21 | 王飞 | Processing method of Ti1023 alloy special-shaped ring piece |
| CN111036808B (en) * | 2019-12-31 | 2021-06-15 | 王飞 | Processing method of Ti1023 alloy special-shaped ring piece |
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Address after: 215626 Suzhou, Jiangsu Province, Zhangjiagang City, Fengzhen Hexing Hexing Road, Huashan Applicant after: ZHANGJIAGANG HAILU ANNULAR FORGING CO., LTD. Address before: 215626, Jiangsu, Suzhou, Zhangjiagang Jin Fengzhen Hexing Zhenxing Road, Zhangjiagang land and sea ring forgings Co., Ltd. Applicant before: Zhangjiagang Hailu Annular Forgings Co., Ltd. |
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Address after: 215626 Huashan Road, Hexing, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Zhangjiagang Zhonghuan Sea and Land High-end Equipment Co., Ltd. Address before: 215626 Huashan Road, Hexing, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: ZHANGJIAGANG HAILU ANNULAR FORGING CO., LTD. |