CN104438989B - The method of the two-way associating rolling and shaping of a kind of GCr15 steel thin-walled dark cylinder ring - Google Patents

Abstract

The method of the two-way associating rolling and shaping of a kind of GCr15 steel thin-walled dark cylinder ring, the steps include: first, determine that the material properties of thin-walled dark cylinder ring product is GCr15 steel and its physical dimension value, and blank when determining the two-way associating roll off of ring and core roller are respectively square-section blank and square-section core roller; Secondly, according to determined roll off than and deformation distribution go out square-section blank physical dimension value than exploitation, and processing and fabricating GCr15 steel square-section blank accordingly; Again, GCr15 steel square-section blank is put into heating furnace to heat, when temperature reaches 1150 ± 30 ^otake out during C and put it into immediately in two-way associating elongator and carry out two-way associating roll off, radial thickness reduces, axial height increases, the plastic deformation of inside and outside increasing radius and become GCr15 steel thin-walled dark cylinder ring product to make it produce.The present invention can effectively enhance productivity, shorten the production time, reduce production cost, is conducive to promoting further developing of Ring Rolling precision plastic forming manufacturing technology.

Description

The method of the two-way associating rolling and shaping of a kind of GCr15 steel thin-walled dark cylinder ring

Technical field

The invention belongs to Ring Rolling precision plastic forming manufacturing technology field, be specifically related to the method for the two-way associating rolling and shaping of a kind of GCr15 steel thin-walled dark cylinder ring.

Background technology

The dark cylinder ring of thin-walled is widely used in the equipments such as hubbed flange in the industrial circles such as Aero-Space, the energy, automobile, boats and ships, chemical industry and the barrel-shaped valve of high pressure.It not only requires to have higher precision, and requires to have good performance.The process for machining and manufacturing that thin-walled dark cylinder ring is traditional is machining and saddle support chambering process, but the shortcoming such as the resistance of deformation that their exist is large, large, the follow-up amount of machining of energy and material consumption is large.

Ring two-way associating roll off is as the advanced plastic forming technology of one, having the advantages such as the high and production cost of good product performance, stock utilization is low, is that zero component forming manufacture in the high-tech sectors such as current countries in the world petrochemical industry, energy machinery, automobile and Aero-Space realizes lightweight, precision, flexibility, high-performance, high efficiency, low cost and short-period important channel.Therefore, Authorization Notice No. (CN102921847), authorized announcement date are precision rolling manufacturing process and the device that the Chinese invention patent of 2015.09.30 discloses a kind of cylindrical member, the Chinese invention that publication No. is (CN103111564A), date of publication is 2013.05.22 discloses a kind of precision rolling manufacturing process of bimetallic cylindrical member, and the two-way associating roll off of ring has been started in recent years for processing and manufacturing tubular ring.But in these two parts of patents of invention, although make use of ring two-way associating roll off technology, but be that advanced row radial rolling (i.e. the wall thickness of ring reduce, constant, the inside and outside increasing radius of axial height) carries out axially rolled (namely the wall thickness of ring reduces, axial height increase, interior outer radius is constant) again in figuration manufacture process, this mode fails to give full play of the advantage of the two-way associating roll off of ring.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide the method for the two-way associating rolling and shaping of a kind of GCr15 steel thin-walled dark cylinder ring, having had the advantages that production efficiency is high, production cost is low.

To achieve these goals, the technical solution used in the present invention is: the method for the two-way associating rolling and shaping of a kind of GCr15 steel thin-walled dark cylinder ring, comprises the steps:

Step one, determines that the material of the dark cylinder ring of thin-walled is GCr15 steel;

Step 2, determines the value of thin-walled dark cylinder ring physical dimension, and the physical dimension of thin-walled dark cylinder ring comprises the outer radius R of the dark cylinder ring of thin-walled _r, inside radius r _r, radial thickness W _rwith axial height H _r;

Step 3, blank during the two-way associating roll off of selected ring is square-section blank, and its material is GCr15 steel;

Step 4, core roller when determining the two-way associating roll off of ring is square-section core roller, and its outer radius value is R _m;

Step 5, determines that roll off is than λ value, first calculates the reasonable value scope of roll off than λ by inequality (1), then selects to determine that a roll off compares λ value than λ reasonable value scope at calculated roll off;

$1<\mathrm{\&lambda;}<\frac{-R_M+\sqrt{R_M^2+W_R(2R_R-W_R)}}{W_R}---\left(1\right)$

Step 6, determines that deformation distribution is than k value, first calculates the reasonable value scope of deformation distribution than k by inequality (2), then selects to determine that a deformation distribution is than k value than k reasonable value scope at calculated deformation distribution;

$\frac{(W_R+{\mathrm{\&lambda;R}}_M+{\mathrm{\&lambda;}}^2{W}_R-2R_R){\mathrm{\&lambda;H}}_R}{(2R_R-W_R-{\mathrm{\&lambda;R}}_M)(2R_R-W_R-{\mathrm{\&lambda;R}}_M-{\mathrm{\&lambda;W}}_R)}<k<0---\left(2\right)$

Step 7, calculate the value determining square-section blank physical dimension, square-section blank physical dimension is specially the radial thickness W of square-section blank _bthe axial height H of value, square-section blank is calculated by formula (3) _bthe inside radius r of value, square-section blank is calculated by formula (4) _bthe outer radius R of value, square-section blank is calculated by formula (5) _bvalue is calculated by formula (6);

$W_B=\frac{(W_{R}k-H_R)-\sqrt{{(W_{R}k-H_R)}^2+4{\mathrm{\&lambda;W}}_R{H}_{R}k}}{2k}---\left(3\right)$

$H_B=\frac{{\mathrm{\&lambda;W}}_R{H}_R}{W_B}---\left(4\right)$

$r_B=\frac{(2R_R-W_R)W_R{H}_R}{2W_B{H}_B}-\frac{W_B}{2}---\left(5\right)$

$R_B=\frac{(2R_R-W_R)W_R{H}_R}{2W_B{H}_B}+\frac{W_B}{2}---\left(6\right)$

Step 8, processing and fabricating goes out GCr15 steel square-section blank, GCr15 rod iron material section is uniformly heated to 1150 ± 30 DEG C from room temperature, then by hot GCr15 rod iron material section jumping-up, punching, stress relief annealing, the GCr15 steel square-section blank of the two-way associating roll off of ring is manufactured by the square-section blank physical dimension value calculated in step 7;

Step 9, GCr15 steel square-section blank is put into heating furnace heat, take out when temperature reaches 1150 ± 30 DEG C and put it in two-way associating elongator at once, carry out two-way associating roll off to it, radial thickness reduces, axial height increases, the plastic deformation of inside and outside increasing radius and become GCr15 steel thin-walled dark cylinder ring product to make it produce.

The invention has the beneficial effects as follows:

The present invention adopts ring two-way associating roll off technique, to GCr15 steel square-section blank through too much turning continuous print roll off, radial thickness reduces, axial height increases, the plastic deformation of inside and outside increasing radius to make it produce, thus figuration manufacture goes out to reach the GCr15 steel thin-walled dark cylinder square-section ring product of predetermined geometrical dimensions.The present invention can effectively improve GCr15 steel thin-walled dark cylinder ring product production efficiency, shorten the production time, reduce production cost, be conducive to promoting the further developing of Ring Rolling precision plastic forming manufacturing technology.

Accompanying drawing explanation

Fig. 1 is thin-walled of the present invention dark cylinder square-section ring product structure schematic diagram.In figure, the outer radius of ring product is R _r, inside radius is r _r, radial thickness is W _r, axial height is H _r.

Fig. 2 is square-section of the present invention blahk structure schematic diagram.In figure, the outer radius of square-section blank is R _b, inside radius is r _b, radial thickness is W _b, axial height is H _b.

Core roll structure schematic diagram when Fig. 3 is ring of the present invention two-way associating roll off.In figure, the outer radius of core roller is R _m.

Fig. 4 is ring changes of section schematic diagram in ring of the present invention two-way associating roll off process.Wherein, Fig. 4 (a) for blank cross sectional shape when the two-way associating roll off of ring starts, its outer radius be R _b, inside radius is r _b, radial thickness is W _b, axial height is H _b; Fig. 4 (b) for the two-way associating roll off of ring start after ring cross sectional shape when the P1 moment, now the outer radius of ring is R _p1, inside radius is r _p1, radial thickness is W _p1, axial height is H _p1, and meet R _p1>R _b, r _p1>r _b, W _p1<W _band H _p1>H _b; Fig. 4 (c) for the two-way associating roll off of ring start after ring cross sectional shape when the P2 moment, now the outer radius of ring is R _p2, inside radius is r _p2, radial thickness is W _p2, axial height is H _p2, and meet P2>P1, R _p2>R _p1, r _p2>r _p1, W _p2<W _p1and H _p2>H _p1; Fig. 4 (d) is the ring cross sectional shape at the end of the two-way associating roll off of ring, and now the outer radius of ring is R _r, inside radius is r _r, radial thickness is W _r, axial height is H _r, and meet R _r>R _p2, r _r>r _p2, W _r<W _p2and H _r>H _p2.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is described in further detail, but given embodiment can not be construed as limiting the invention.

A method for the two-way associating rolling and shaping of GCr15 steel thin-walled dark cylinder ring, comprises the following steps:

Step one, determines that the material of the dark cylinder ring of thin-walled is GCr15 steel;

Step 2, determine (as shown in Figure 1) thin-walled dark cylinder ring physical dimension value, the physical dimension of thin-walled dark cylinder ring comprises the outer radius R of the dark cylinder ring of thin-walled _r, inside radius r _r, radial thickness W _rwith axial height H _r;

Step 3, blank during the two-way associating roll off of selected ring is (as shown in Figure 2) square-section blank, and its material is GCr15 steel;

Step 4, core roller when determining the two-way associating roll off of ring is (as shown in Figure 3) square-section core roller, and its outer radius value is R _m;

Step 5, determines that roll off is than λ value, first calculates the reasonable value scope of roll off than λ by inequality (1), then selects to determine that a roll off compares λ value than λ reasonable value scope at calculated roll off;

$1<\mathrm{\&lambda;}<\frac{-R_M+\sqrt{R_M^2+W_R(2R_R-W_R)}}{W_R}---\left(1\right)$

Step 6, determines that deformation distribution is than k value, first calculates the reasonable value scope of deformation distribution than k by inequality (2), then selects to determine that a deformation distribution is than k value than k reasonable value scope at calculated deformation distribution;

$\frac{(W_R+{\mathrm{\&lambda;R}}_M+{\mathrm{\&lambda;}}^2{W}_R-2R_R){\mathrm{\&lambda;H}}_R}{(2R_R-W_R-{\mathrm{\&lambda;R}}_M)(2R_R-W_R-{\mathrm{\&lambda;R}}_M-{\mathrm{\&lambda;W}}_R)}<k<0---\left(2\right)$

Step 7, calculate the value determining square-section blank physical dimension, square-section blank physical dimension is specially the radial thickness W of square-section blank _bthe axial height H of value, square-section blank is calculated by formula (3) _bthe inside radius r of value, square-section blank is calculated by formula (4) _bthe outer radius R of value, square-section blank is calculated by formula (5) _bvalue is calculated by formula (6);

$W_B=\frac{(W_{R}k-H_R)-\sqrt{{(W_{R}k-H_R)}^2+4{\mathrm{\&lambda;W}}_R{H}_{R}k}}{2k}---\left(3\right)$

$H_B=\frac{{\mathrm{\&lambda;W}}_R{H}_R}{W_B}---\left(4\right)$

$r_B=\frac{(2R_R-W_R)W_R{H}_R}{2W_B{H}_B}-\frac{W_B}{2}---\left(5\right)$

$R_B=\frac{(2R_R-W_R)W_R{H}_R}{2W_B{H}_B}+\frac{W_B}{2}---\left(6\right)$

Step 8, processing and fabricating goes out GCr15 steel square-section blank, GCr15 rod iron material section is uniformly heated to 1150 ± 30 DEG C from room temperature, then by hot GCr15 rod iron material section jumping-up, punching, stress relief annealing, the GCr15 steel square-section blank of the two-way associating roll off of ring is manufactured by the square-section blank physical dimension value calculated in step 7;

Step 9, GCr15 steel square-section blank is put into heating furnace heat, take out when temperature reaches 1150 ± 30 DEG C and put it in two-way associating elongator immediately, carry out two-way associating roll off to it, (as shown in Figure 4) radial thickness reduces, axial height increases, the plastic deformation of inside and outside increasing radius and become GCr15 steel thin-walled dark cylinder ring product to make it produce.

Embodiment: the outer radius supposing final GCr15 steel thin-walled dark cylinder square-section ring product is 200mm, inside radius is 180mm, radial thickness is 20mm, axial height is 150mm.

Step one, determines that the material of the dark cylinder ring of thin-walled is GCr15 steel;

Step 2, determine (as shown in Figure 2) thin-walled dark cylinder ring physical dimension value, the physical dimension of thin-walled dark cylinder ring comprises the outer radius R of the dark cylinder ring of thin-walled _r=300mm, inside radius r _r=270mm, radial thickness W _r=30mm and axial height H _r=150mm;

Step 3, blank during the two-way associating roll off of selected ring is (as shown in Figure 3) square-section blank, and its material is GCr15 steel;

Step 4, core roller when determining the two-way associating roll off of ring is (as shown in Figure 4) square-section core roller, and supposes that its outer radius value is R _m=120mm;

Step 5, determine that roll off is than λ value, first calculating roll off than the reasonable value scope of λ by inequality (1) is [1,1.92], determine that a roll off is 1.4 than λ value in the selection interior than λ reasonable value scope [1,1.92] of calculated roll off again;

Step 6, determine that deformation distribution is than k value, first calculating deformation distribution than the reasonable value scope of k by inequality (2) is [-0.82,0], determine that a deformation distribution is-0.7 than k value in the selection interior than k reasonable value scope [-0.82,0] of calculated deformation distribution again;

Step 7, calculate the value determining square-section blank physical dimension, square-section blank physical dimension is specially the radial thickness W of square-section blank _bthe axial height H of=45.2mm, square-section blank _bthe inside radius r of=139.4mm, square-section blank _bthe outer radius R of=181.0mm, square-section blank _b=226.2mm;

Step 8, processing and fabricating square-section GCr15 steel wool base, GCr15 rod iron material section is uniformly heated to 1150 DEG C from room temperature, then by hot GCr15 rod iron material section jumping-up, punching, stress relief annealing, the GCr15 steel square-section blank of the two-way associating roll off of ring is manufactured by the square-section blank physical dimension value calculated in step 7;

Step 9, square-section GCr15 steel wool base is put into heating furnace heat, take out when temperature reaches 1150 DEG C and put it in two-way associating elongator immediately, carry out two-way associating roll off to it, radial thickness reduces, axial height increases, the plastic history of inside and outside increasing radius and become GCr15 steel thin-walled dark cylinder ring product to make it produce.

Claims (2)

1. a method for the two-way associating rolling and shaping of GCr15 steel thin-walled dark cylinder ring, is characterized in that, comprise the steps:

Step one, determines that the material of the dark cylinder ring of thin-walled is GCr15 steel;

Step 2, determines the value of thin-walled dark cylinder ring physical dimension, and the physical dimension of thin-walled dark cylinder ring comprises the outer radius R of the dark cylinder ring of thin-walled _r, inside radius r _r, radial thickness W _rwith axial height H _r;

Step 3, blank during the two-way associating roll off of selected ring is square-section blank, and its material is GCr15 steel;

Step 4, core roller when determining the two-way associating roll off of ring is square-section core roller, and its outer radius value is R _m;

Step 5, determines that roll off is than λ value, first calculates the reasonable value scope of roll off than λ by inequality (1), then selects to determine that a roll off compares λ value than λ reasonable value scope at calculated roll off;

$1<\mathrm{\&lambda;}<\frac{-R_M+\sqrt{R_M^2+W_R(2R_R-W_R)}}{W_R}---\left(1\right)$

Step 6, determines that deformation distribution is than k value, first calculates the reasonable value scope of deformation distribution than k by inequality (2), then selects to determine that a deformation distribution is than k value than k reasonable value scope at calculated deformation distribution;

$\frac{(W_R+\mathrm{\&lambda;}{R}_M+{\mathrm{\&lambda;}}^2{W}_R-2R_R)\mathrm{\&lambda;}{H}_R}{(2R_R-W_R-\mathrm{\&lambda;}{R}_M)(2R_R-W_R-\mathrm{\&lambda;}{R}_M-\mathrm{\&lambda;}{W}_R)}<k<0---\left(2\right)$

Step 7, calculate the value determining square-section blank physical dimension, square-section blank physical dimension is specially the radial thickness W of square-section blank _bthe axial height H of value, square-section blank is calculated by formula (3) _bthe inside radius r of value, square-section blank is calculated by formula (4) _bthe outer radius R of value, square-section blank is calculated by formula (5) _bvalue is calculated by formula (6);

$W_B=\frac{(W_{R}k-H_R)-\sqrt{{(W_{R}k-H_R)}^2+4\mathrm{\&lambda;}{W}_R{H}_{R}k}}{2k}---\left(3\right)$

$H_B=\frac{\mathrm{\&lambda;}{W}_R{H}_R}{W_B}---\left(4\right)$

$r_B=\frac{(2R_R-W_R)W_R{H}_R}{2W_B{H}_B}-\frac{W_B}{2}---\left(5\right)$

$R_B=\frac{(2R_R-W_R)W_R{H}_R}{2W_B{H}_B}+\frac{W_B}{2}---\left(6\right)$

Step 8, processing and fabricating goes out GCr15 steel square-section blank, GCr15 rod iron material section is uniformly heated to 1150 ± 30 DEG C from room temperature, then by hot GCr15 rod iron material section jumping-up, punching, stress relief annealing, the GCr15 steel square-section blank of the two-way associating roll off of ring is manufactured by the square-section blank physical dimension value calculated in step 7;

Step 9, GCr15 steel square-section blank is put into heating furnace heat, take out when temperature reaches 1150 ± 30 DEG C and put it in two-way associating elongator immediately, carry out two-way associating roll off to it, radial thickness reduces, axial height increases, the plastic deformation of inside and outside increasing radius and become GCr15 steel thin-walled dark cylinder ring product to make it produce.

2. the method for the two-way associating rolling and shaping of a kind of GCr15 steel thin-walled according to claim 1 dark cylinder ring, is characterized in that, comprise the steps:

Step one, determines that the material of the dark cylinder ring of thin-walled is GCr15 steel;

Step 2, determines thin-walled dark cylinder ring physical dimension value, and the physical dimension of thin-walled dark cylinder ring comprises the outer radius R of the dark cylinder ring of thin-walled _r=300mm, inside radius r _r=270mm, radial thickness W _r=30mm and axial height H _r=150mm;

Step 3, blank during the two-way associating roll off of selected ring is square-section blank, and its material is GCr15 steel;

Step 4, core roller when determining the two-way associating roll off of ring is square-section core roller, and supposes that its outer radius value is R _m=120mm;

Step 5, determine that roll off is than λ value, first calculating roll off than the reasonable value scope of λ by inequality (1) is [1,1.92], determine that a roll off is 1.4 than λ value in the selection interior than λ reasonable value scope [1,1.92] of calculated roll off again;

Step 6, determine that deformation distribution is than k value, first calculating deformation distribution than the reasonable value scope of k by inequality (2) is [-0.82,0], determine that a deformation distribution is-0.7 than k value in the selection interior than k reasonable value scope [-0.82,0] of calculated deformation distribution again;

Step 7, calculate the value determining square-section blank physical dimension, square-section blank physical dimension is specially the radial thickness W of square-section blank _bthe axial height H of=45.2mm, square-section blank _bthe inside radius r of=139.4mm, square-section blank _bthe outer radius R of=181.0mm, square-section blank _b=226.2mm;

Step 8, processing and fabricating square-section GCr15 steel wool base, GCr15 rod iron material section is uniformly heated to 1150 DEG C from room temperature, then by hot GCr15 rod iron material section jumping-up, punching, stress relief annealing, the GCr15 steel square-section blank of the two-way associating roll off of ring is manufactured by the square-section blank physical dimension value calculated in step 7;

Step 9, square-section GCr15 steel wool base is put into heating furnace heat, take out when temperature reaches 1150 DEG C and put it in two-way associating elongator immediately, carry out two-way associating roll off to it, radial thickness reduces, axial height increases, the plastic history of inside and outside increasing radius and become GCr15 steel thin-walled dark cylinder ring product to make it produce.