CN106270326A - The forging method of big guide rail forging part peculiar to vessel and forging mold - Google Patents

The forging method of big guide rail forging part peculiar to vessel and forging mold Download PDF

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Publication number
CN106270326A
CN106270326A CN201610780968.XA CN201610780968A CN106270326A CN 106270326 A CN106270326 A CN 106270326A CN 201610780968 A CN201610780968 A CN 201610780968A CN 106270326 A CN106270326 A CN 106270326A
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China
Prior art keywords
forging
mold
base
biscuit
guide rail
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CN201610780968.XA
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Chinese (zh)
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CN106270326B (en
Inventor
陈平
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西安昆鹏锻压科工贸有限责任公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08Upsetting

Abstract

The present invention provides forging method and the forging mold of a kind of big guide rail forging part peculiar to vessel, and this forging method includes: blank is carried out jumping-up process, and preparing cross section is oval biscuit;Being placed in blanking mold by biscuit and carry out pressure shoulder sub-material process, preparing cross section is criss-cross just base;First base is carried out flat-die forging process, prepares pre-forging stock;Pre-forging stock is placed in mould and carries out die forging process, forge big guide rail forging part peculiar to vessel.The present invention can be implemented in and produces the rustless steel guide rail forging part that relatively large-tonnage equipment just can be produced on the equipment of less tonnage, and improve stock utilization, shorten the production cycle, reduce production cost, ensure that the integrity of metallic fiber streamline simultaneously, make every mechanical property of forging part all can reach to design requirement.

Description

The forging method of big guide rail forging part peculiar to vessel and forging mold
Technical field
The present invention relates to technical field of forging, be specifically related to forging method and the forge mould of a kind of big guide rail forging part peculiar to vessel Tool.
Background technology
Guide rail is the part that a kind of comparison on big ship is crucial and important, uses PH stainless steel material system Making, its intensity, toughness, mechanical property, grain size, corrosion resistance etc. require the highest, non-metallic inclusion, macrostructure and ultrasound wave The prescriptions such as flaw detection are the highest.Additionally, the structure of guide rail is the most complicated, part main body is cross structure, in part main body Three vertical direction all have vary in size, shape is different, width is different pit or groove, belong to the die forging of twig complex class shape Part.Therefore, the manufacture of big rustless steel guide rail forging part peculiar to vessel is extremely important to the big ship of China and the development of defence equipment.
At present, the production method of this type of part mainly has two kinds, and one is at forging equipment die forging, is suitable for high-volume raw Producing, but the die cost used in this method is high, forging flash spillage of material is many, it is common that the 18% of forge weight is left The right side, and production cycle length, equipment investment are big;Another kind is to use the forging of flat-die forging method, reprocesses after first forging simple shape Shaping, be suitable for the production of the general part of small batch, this method stock utilization is the lowest, is generally only about 30%, adds Work cost is high, and the material of about 70% to remove becomes waste material, and production cycle length, metal fibrous tissue are destroyed, its mechanics Performance does not reaches design requirement.
Rustless steel guide rail on big ship, its forging horizontal projected area about 1800cm2, use precipitation hardenable stainless Steel material makes, and the prices of raw materials of making are the highest.Carrying out die forging according to die hammer, the equipment tonnage of needs is 100KN, phase The die cost answered is expensive, and its total cost of production is higher;Shaping according to flat-die forging method, its total cost of production is the most very Height, and its mechanical property and grain size etc. do not reach design requirement yet.
Summary of the invention
The present invention provides forging method and the forging mold of a kind of big guide rail forging part peculiar to vessel, to solve to adopt in prior art With forging equipment carry out die forging produce guide rail exist die cost high, equipment needed thereby tonnage is big, spillage of material is many, production is all Phase length and the problem such as production cost is big.
Further object is that and solve prior art to use flat-die forging method produce the material that guide rail exists Utilization rate is low, production cost is high, production cycle length, metal fibrous tissue destroyed and mechanical property does not reaches design requirement etc. and asks Topic.
First aspect, the present invention provides the forging method of a kind of big guide rail forging part peculiar to vessel, including:
Blank is carried out jumping-up process, and preparing cross section is oval biscuit;
Being placed in blanking mold by described biscuit and carry out pressure shoulder sub-material process, preparing cross section is criss-cross just base;
Described just base is carried out flat-die forging process, prepares pre-forging stock;
Described pre-forging stock is placed in mould and carries out die forging process, forge big guide rail forging part peculiar to vessel.
As the optimal way of first aspect present invention, the described step preparing the biscuit that cross section is ellipse includes:
Rustless steel bar is carried out blanking process, prepares blank that ratio of height to diameter is 2.4 and heat;
The described blank heated carries out jumping-up vertically processing to ratio of height to diameter is 1.3, is then carried out by described blank Riveting upsetting processes, and described blank finally overturns 90 ° of major axis making described blank and carries out the jumping-up flat process of bat, system the most afterwards Standby cross section is oval biscuit.
As the optimal way of first aspect present invention, described prepare the step that cross section is criss-cross just base and include:
Described biscuit is placed in the base lower mold of blanking mold, makes the metallic fiber streamline of described biscuit along level side To;
Pressing under the base upper mold of described blanking mold, it is criss-cross just base that described biscuit upsetting squeeze becomes cross section, wherein Described biscuit is along the both sides of oval short-axis direction by forming two brachyplasts of described just base after upsetting squeeze, described biscuit is along oval The both sides of long axis direction are by two long shoots forming described just base after upsetting squeeze.
As the optimal way of first aspect present invention, the described step preparing pre-forging stock includes:
Brachyplast and the long shoot of described just base are carried out pulling process respectively, after being trimmed and correcting, prepares pre-forging stock;Wherein Two described brachyplasts form two short branches of described pre-forging stock, and two described long shoots form two lower surfaces of described pre-forging stock Long branch for inclined-plane.
As the optimal way of first aspect present invention, described cross section of preparing is the step of biscuit of ellipse, preparation Cross section is the step of criss-cross just base, prepares the step of pre-forging stock and forge the step of big guide rail forging part peculiar to vessel, Initial forging temperature is 1180 DEG C, and final forging temperature is 900 DEG C.
As the optimal way of first aspect present invention, described prepare the step and institute that cross section is criss-cross just base State in the step forging big guide rail forging part peculiar to vessel, the preheating temperature of described blanking mold and described mould be 200~ 300℃。
The forging method of the guide rail forging part big peculiar to vessel that the present invention provides, by being optimized step each in forging process And devising corresponding mould, it is possible to achieve the relatively large-tonnage equipment that produces on the equipment of less tonnage just can be produced Rustless steel guide rail forging part, and improve stock utilization, shorten the production cycle, reduce production cost, ensure simultaneously The integrity of metallic fiber streamline, makes every mechanical property of forging part all can reach to design requirement.
Second aspect, the present invention provides the forging mold of a kind of big guide rail forging part peculiar to vessel, including blanking mold and molding Mould;
Wherein, described mould includes shaping upper, molding lower mold, movable cushion block and moves back die-cushion, described shaping upper Middle position be provided with elongated raised portion, described elongated raised portion is symmetrically arranged on two with square lobe, described square convex Opposing two sides, the portion of rising are inclined-plane;Described molding bottom die has the molding lower mold die cavity of concave downward, and described movable cushion block sets In described molding lower mold die cavity bottom, described movable cushion block is strip, axial and the described elongated raised of described movable cushion block Portion axially vertical, described in move back die-cushion and be located at the lower section of described movable cushion block;Described shaping upper, described molding lower mold and described The internal cavity shape that movable cushion block is formed after combining is identical with the external shape of forging part.
As the optimal way of second aspect present invention, described molding lower mold is positioned at the axial both sides of described movable cushion block The pattern draft of two sides is 1.5 °;The pattern draft of described shaping upper is 10 °.
As the optimal way of second aspect present invention, described movable cushion block is inclined-plane along its axial two sides, institute State inclined-plane and there is the inclination angle of 20 °.
As the optimal way of second aspect present invention, described blanking mold includes base upper mold and the base cooperated Lower mold, described base mold has model cavity on concave up sunken step base, and described base lower mold has concave downward Step base lower mold die cavity;Internal cavity shape and the first base that described base upper mold and described base lower mold are formed after combining External shape identical.
The forging mold of the guide rail forging part big peculiar to vessel that the present invention provides, by preparation just base and forging guide rail forging part During design and improve corresponding blanking mold and mould, it is possible to achieve next life on the equipment of less tonnage Produce the rustless steel guide rail forging part that relatively large-tonnage equipment just can be produced, and improve stock utilization, shorten production week Phase, reducing production cost, ensure that the integrity of metallic fiber streamline simultaneously, the every mechanical property making forging part is the most permissible Reach to design requirement.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings Accompanying drawing.
The preparation flow figure of biscuit in the forging method of the guide rail forging part big peculiar to vessel that Fig. 1 provides for the embodiment of the present invention;
The preparation flow figure of first base in the forging method of the guide rail forging part big peculiar to vessel that Fig. 2 provides for the embodiment of the present invention;
The structural representation of pre-forging stock in the forging method of the guide rail forging part big peculiar to vessel that Fig. 3 provides for the embodiment of the present invention Figure;
In the forging method of the guide rail forging part big peculiar to vessel that Fig. 4 provides for the embodiment of the present invention, another structure of pre-forging stock is shown It is intended to;
The structure of the forging method middle guide forging part of the guide rail forging part big peculiar to vessel that Fig. 5 provides for the embodiment of the present invention is shown It is intended to;
Fig. 6 is the profile in Fig. 5 along E-E line;
Fig. 7 is the right view of Fig. 5;
The three-dimensional knot of the forging method middle guide forging part of the guide rail forging part big peculiar to vessel that Fig. 8 provides for the embodiment of the present invention Structure schematic diagram;
Another of the forging method middle guide forging part of the guide rail forging part big peculiar to vessel that Fig. 9 provides for the embodiment of the present invention stands Body structural representation;
In the forging mold of the guide rail forging part big peculiar to vessel that Figure 10 provides for the embodiment of the present invention, the structure of mould is shown It is intended to;
Figure 11 is the profile in Figure 10 along line A-A.
In the forging mold of the guide rail forging part big peculiar to vessel that Figure 12 provides for the embodiment of the present invention, the structure of blanking mold is shown It is intended to;
Wherein, 1, shaping upper, 2, molding lower mold, 3, movable cushion block, 4, move back die-cushion, 5, guide pin bushing, 6, guide pillar, 7, on base Mould, 8, base lower mold.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention Formula is described in further detail.
The embodiment of the present invention provides the forging method of a kind of big guide rail forging part peculiar to vessel, and this forging method includes following step Rapid:
101, blank being carried out jumping-up process, preparing cross section is oval biscuit.
102, being placed in blanking mold by biscuit and carry out pressure shoulder sub-material and process, preparing cross section is criss-cross just base.
103, first base is carried out flat-die forging process, prepare pre-forging stock.
104, pre-forging stock is placed in mould carries out die forging process, forge big guide rail forging part peculiar to vessel.
The forging method of the guide rail forging part big peculiar to vessel that the present invention provides, by being optimized step each in forging process And devising corresponding mould, it is possible to achieve the relatively large-tonnage equipment that produces on the equipment of less tonnage just can be produced Rustless steel guide rail forging part, and improve stock utilization, shorten the production cycle, reduce production cost, ensure simultaneously The integrity of metallic fiber streamline, makes every mechanical property of forging part all can reach to design requirement.
On the basis of above-described embodiment, with reference to shown in Fig. 1, step 101, i.e. preparing cross section is oval biscuit tool Body can be implemented in accordance with the following steps:
1011, rustless steel bar is carried out blanking process, prepare blank that ratio of height to diameter is 2.4 and heat.
In this step, by rustless steel bar in sawing machine loading and unloading, prepare the blank that ratio of height to diameter is 2.4.By the Gao Jing of blank Ratio preferably 2.4, it is therefore an objective to increase forging ratio.In the present embodiment, choose the rustless steel bar of φ 120mm, the length after blanking For 288mm, ratio of height to diameter is 2.4.
1012, the described blank heated carries out jumping-up process vertically is 1.3 to ratio of height to diameter, then by described blank Carry out riveting upsetting process, finally described blank is overturn 90 ° of major axis making described blank and carries out the flat place of jumping-up bat the most afterwards Reason, preparing cross section is oval biscuit.
In this step, during the blank after blanking is carried out jumping-up process, additionally use riveting upsetting operation and break-in jumping-up Clap flat operation, thus can ensure that the metallic fiber streamline of the forging part finally forged is complete, be reasonably distributed.It addition, existing skill In art, the cross section of biscuit is generally rectangular, is preferably ellipse, so at follow-up preparation just base in the embodiment of the present invention During, material is easier to be full of in criss-cross blanking mold, without increasing clout, it is possible to be further ensured that metal is fine Dimension streamline is complete and is not cut off.
On the basis of above-described embodiment, with reference to shown in Fig. 2, step 102, i.e. preparing cross section is criss-cross just base tool Body can be implemented in accordance with the following steps:
1021, biscuit is placed in the base lower mold of blanking mold, makes the metallic fiber streamline of biscuit in the horizontal direction.
In this step, when being placed in by biscuit in the base lower mold of blanking mold, need to ensure that the metallic fiber streamline of biscuit is along water Square to, so when press under base upper mold biscuit is carried out upsetting squeeze time, the metallic fiber streamline of material continuously, complete.
1022, pressing under the base upper mold of blanking mold, it is criss-cross just base, wherein biscuit that biscuit upsetting squeeze becomes cross section The both sides of the oval short-axis direction in edge are by two brachyplasts of the just base of formation after upsetting squeeze, and biscuit is subject to along the both sides of ellipse long axis direction Two long shoots of just base are formed after upsetting squeeze.
In this step, when base upper mold and base lower mold close, biscuit is carried out pressure shoulder sub-material, utilizes the complete of biscuit Symmetry, completes the accurate sub-material to oval biscuit in blanking mold.Meanwhile, biscuit is pressed when takeing in blanking mold is to be subject to Extruding force shapes, and metallic fiber streamline is continuous whole, is shaped by shearing force and make metal fine when solving traditional rectangular biscuit pressure shoulder The problem that dimension streamline is cut-off.Further, pressure shoulder time need not increase clout, solve traditional rectangular biscuit pressure shoulder time because of length not Enough need to increase clout, and the most cut problem becoming waste material of clout, it is effectively saved material.
Wherein, the blanking mold described in the embodiment of the present invention includes base upper mold and the base lower mold cooperated, system Base mold has model cavity on concave up sunken step base, and base lower mold has the step base drag of concave downward Chamber, the internal cavity shape that base upper mold is formed after combining with base lower mold is identical with the external shape of first base.
On the basis of above-described embodiment, step 103, i.e. prepare pre-forging stock and specifically can implement as follows:
Brachyplast and the long shoot of first base are carried out pulling process respectively, after being trimmed and correcting, prepares pre-forging stock;Two of which Brachyplast forms two short branches of pre-forging stock, and two long shoots form the long branch that two lower surfaces are inclined-plane of pre-forging stock.
In this step, brachyplast and the long shoot of first base are carried out pulling process respectively, mainly do for follow-up die forging operation Prepare, it is provided that shape is more reasonable, the most accurate pre-forging stock of size Control, it is ensured that pre-forging stock is finally in mould During die forging, metal material can be completely filled with impression, makes forging part overlap be full of in the bridge portion of overlap, did not had in the storehouse portion of overlap Many overlap waste materials, thus saved material.The concrete shape of the pre-forging stock prepared in this step is with reference to shown in Fig. 3 and Fig. 4.
Step 104, i.e. forges in the step of big guide rail forging part peculiar to vessel, and the mould of employing includes shaping upper, one-tenth Type lower mold, movable cushion block and move back die-cushion, the internal cavity formed after wherein shaping upper, molding lower mold and movable cushion block combine Shape is identical with the external shape of forging part.
In this step, it is possible to achieve produce the rustless steel that relatively large-tonnage equipment just can be produced on the equipment of less tonnage Guide rail forging part.Mould is placed on the lower anvil of 30KN Single arm, successively by move back die-cushion, movable cushion block and heat pre- Forging stock is put in the molding lower mold of mould and is carried out die forging.Shaping upper is taken out, by molding after completing by die forging with operation machine Lower mold overturn 180 °, tap move back die-cushion, move back die-cushion and exit from lower mold together with forging part and movable cushion block, movable cushion block with Forging part also can be automatically separated.Finally forging part is placed on hot trimming in edger and goes deburring, i.e. complete whole big ship By the manufacturing process of guide rail forging part.
The concrete shape of this guide rail forging part referring in particular to shown in Fig. 5-Fig. 9, guide rail forging part top have one long recessed Groove and two pits being symmetrically arranged at long recess both sides, its underpart has two long narrow supporting legs and a wide groove. Wherein, Fig. 8 and Fig. 9 is the three-dimensional structure diagram of guide rail forging part, and it more can reflect the complexity of guide rail forging part structure.This is led It is a fire one-shot forming during rail forging part die forging, it is ensured that deflection during final forging and metallic fiber streamline, forging part is brilliant Granularity >=6 grade, the quality of guide rail forging part and every mechanical property all can reach to design requirement.
On the basis of above-described embodiment, in step 101, step 102, step 103 and step 104, initial forging temperature is 1180 DEG C, final forging temperature is 900 DEG C.Accurate control to forging temperature, the more conducively shaping of material, and ensure metallic fiber stream Line complete.
On the basis of above-described embodiment, the mould used in the blanking mold used in step 102 and step 104 Preheating temperature be 200~300 DEG C, and use water-based graphite to be lubricated.
The embodiment of the present invention also provides for the forging mold of a kind of big guide rail forging part peculiar to vessel, and this forging mold includes base mould Tool and mould.With reference to shown in Figure 10 and Figure 11, this mould includes shaping upper 1, molding lower mold 2, movable cushion block 3 and Moving back die-cushion 4, the middle position of shaping upper 1 is provided with elongated raised portion 11, and being symmetrically arranged on two with of elongated raised portion 11 is square Lobe 12, the opposing two sides of square lobe 12 are inclined-plane.Molding lower mold 2 has the molding lower mold die cavity of concave downward, Movable cushion block 3 is located at molding lower mold die cavity bottom, and movable cushion block 3 is strip, the axial and elongated raised portion 11 of movable cushion block 3 Axially vertical, move back die-cushion 4 and be located at the lower section of movable cushion block 3.After shaping upper 1, molding lower mold 2 and movable cushion block 3 combine The internal cavity shape formed is identical with the external shape of forging part.
On the basis of above-described embodiment, molding lower mold is positioned at the pattern draft of the two sides of the axial both sides of movable cushion block Being 1.5 °, less pattern draft makes blow energy more concentrate, beneficially metal material is full of impression, therefore equipment needed thereby Tonnage can reduce, and may be implemented in the production of the forging part completing 100KN die hammer on 30KN Single arm.Meanwhile, 30KN Single arm No ejector, moves back die-cushion and makes the forging part can the demoulding smoothly under this pattern draft.The pattern draft of shaping upper is 10 °, Can ensure that forging part does not glue shaping upper, be also beneficial to the demoulding.
On the basis of above-described embodiment, movable cushion block 3 being inclined-plane along its axial two sides, this inclined-plane has 20 ° Inclination angle.The damageable zone of molding lower mold 2 is designed as movable cushion block 3, it is easy to change, can effectively extend making of mould Use the life-span.Usually, movable cushion block 3 is commonly provided with two pieces, is used alternatingly during die forging.The inclination angle on the inclined-plane in movable cushion block 3 It is designed as 20 °, the most easily makes finally to be configured to the position of two long narrow supporting legs on forging part and be full of, and after the forging part demoulding Easily make movable cushion block 3 be automatically separated with forging part, also make the demoulding functions moving back die-cushion 4 be achieved simultaneously.
Additionally, shaping upper 1 is provided with the guide pillar 6 for guiding, molding lower mold 2 is provided with and matches with this guide pillar 6 Guide pin bushing 5.
On the basis of above-described embodiment, with reference to shown in Figure 12, blanking mold includes base upper mold 7 and the system cooperated Base lower mold 8, base upper mold 7 has model cavity on the step base upwards caved in, and base lower mold 8 has the step of concave downward Formula base lower mold die cavity, the external shape of internal cavity shape and first base that base upper mold 7 and base lower mold 8 are formed after combining Identical.This blanking mold simple in construction, four orientation are the most operable, and cost of manufacture is low.
Finally, the forging method of guide rail forging part big peculiar to vessel provided the embodiment of the present invention and forging mold are produced The stock utilization of forging part, mechanical property and internal soundness are detected respectively, and its testing result is shown in Table 1 respectively, table 2 and Shown in table 3.
Table 1 stock utilization synopsis
Table 2 forging part of the present invention mechanical performance data table
Table 3 forging part of the present invention internal soundness tables of data
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (10)

1. the forging method of a big guide rail forging part peculiar to vessel, it is characterised in that including:
Blank is carried out jumping-up process, and preparing cross section is oval biscuit;
Being placed in blanking mold by described biscuit and carry out pressure shoulder sub-material process, preparing cross section is criss-cross just base;
Described just base is carried out flat-die forging process, prepares pre-forging stock;
Described pre-forging stock is placed in mould and carries out die forging process, forge big guide rail forging part peculiar to vessel.
Forging method the most according to claim 1, it is characterised in that the described step preparing the biscuit that cross section is ellipse Suddenly include:
Rustless steel bar is carried out blanking process, prepares blank that ratio of height to diameter is 2.4 and heat;
The described blank heated carries out jumping-up vertically processing to ratio of height to diameter is 1.3, then described blank is carried out riveting upsetting Process, finally described blank is overturn 90 ° of major axis making described blank and carries out the jumping-up flat process of bat, preparation horizontal stroke the most afterwards Cross section is oval biscuit.
Forging method the most according to claim 1, it is characterised in that described prepare the step that cross section is criss-cross just base Suddenly include:
Described biscuit is placed in the base lower mold of blanking mold, makes the metallic fiber streamline of described biscuit in the horizontal direction;
Pressing under the base upper mold of described blanking mold, it is criss-cross just base that described biscuit upsetting squeeze becomes cross section, wherein said Biscuit is along the both sides of oval short-axis direction by forming two brachyplasts of described just base after upsetting squeeze, described biscuit is along oval major axis The both sides in direction are by two long shoots forming described just base after upsetting squeeze.
Forging method the most according to claim 3, it is characterised in that the described step preparing pre-forging stock includes:
Brachyplast and the long shoot of described just base are carried out pulling process respectively, after being trimmed and correcting, prepares pre-forging stock;Two of which Described brachyplast forms two short branches of described pre-forging stock, and two lower surfaces that two described long shoots form described pre-forging stock are oblique The long branch in face.
Forging method the most according to claim 1, it is characterised in that the described step preparing the biscuit that cross section is ellipse Suddenly, prepare step that cross section is criss-cross just base, prepare the step of pre-forging stock and forge big guide rail forging part peculiar to vessel In step, initial forging temperature is 1180 DEG C, and final forging temperature is 900 DEG C.
Forging method the most according to claim 1, it is characterised in that described prepare the step that cross section is criss-cross just base In the rapid and step of the described big guide rail forging part peculiar to vessel of forging, the preheating temperature of described blanking mold and described mould is equal It it is 200~300 DEG C.
7. the forging mold of a big guide rail forging part peculiar to vessel, it is characterised in that include blanking mold and mould;
Wherein, described mould includes shaping upper, molding lower mold, movable cushion block and moves back die-cushion, in described shaping upper Between position be provided with elongated raised portion, described elongated raised portion is symmetrically arranged on two with square lobe, described square lobe Opposing two sides are inclined-plane;Described molding bottom die has the molding lower mold die cavity of concave downward, and described movable cushion block is located at institute Stating molding lower mold die cavity bottom, described movable cushion block is strip, the axial and described elongated raised portion of described movable cushion block Axially vertical, described in move back die-cushion and be located at the lower section of described movable cushion block;Described shaping upper, described molding lower mold and described activity The internal cavity shape that cushion block is formed after combining is identical with the external shape of forging part.
Forging mold the most according to claim 7, it is characterised in that be positioned at described movable cushion block axle in described molding lower mold Pattern draft to the two sides of both sides is 1.5 °;The pattern draft of described shaping upper is 10 °.
Forging mold the most according to claim 7, it is characterised in that in described movable cushion block along its axial two sides be Inclined-plane, described inclined-plane has the inclination angle of 20 °.
10. according to the forging mold according to any one of claim 7 to 9, it is characterised in that described blanking mold includes mutually The base upper mold coordinated and base lower mold, described base mold has model cavity on concave up sunken step base, described system Base lower mold has the step base lower mold die cavity of concave downward;Described base upper mold and described base lower mold are formed after combining Internal cavity shape identical with the external shape of first base.
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Cited By (1)

* Cited by examiner, † Cited by third party
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