Silicon steel compound circle shear, mounting structure and preparation method

Abstract

The invention discloses a silicon steel compound circle shear, a mounting structure and a preparation method, and relates to the technical field of circle shears. Comprising a disc base body, and a center hole is formed in the disc base body; one side of the disc base body is a working face, a step face is arranged on the side facing the working face, and a shear blade ring is installed on the step face. Positioning holes are formed in the disc base body and the shear blade ring, and positioning screws are installed to fix the two groups of positioning holes; the shear blade ring is made of a silicon steel alloy material and is prepared from the following component materials in parts by weight: 0.35 to 0.52 part of C, 1 to 4.5 parts of Si, 0.3 to 0.5 part of Mn, 0.05 to 0.23 part of B, 2 to 3 parts of Al, 3 to 7 parts of Cr, 2.5 to 3.4 parts of Ni, 3 to 5 parts of Ti, 2 to 4 parts of Mo, 0.7 to 0.13 part of Co, 0.015 to 0.025 part of P and the balance of Fe and trace residual impurities; wherein 0.109 < = (B + Co) / (Fe + Cr + Ni) + (Cr + Ti + Al + Si) / Fe < = 0.275. The technical problem that in the prior art, the cost is too high due to the fact that all alloy steel materials are adopted is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of disc shears, and in particular relates to a silicon steel compound disc shear, a mounting structure and a preparation method. Background Art

[0002] The disc shear blade, also known as the longitudinal shear blade, is an important component of the steel plate in the longitudinal shearing operation of the metallurgical steel rolling industry. It is often installed on the long axis of the shearing machine and is used to shear long strip workpieces such as strip steel. With the increasing market requirements for product quality and the continuous development of the steel industry, the steel rolling technology has been continuously updated and upgraded, and the requirements for shear blade performance have become higher and higher. At present, the disc shear will continuously increase the content of strengthening alloy elements such as Ni, Mo, W, V, etc., thereby improving the overall hardness and enhancing its wear resistance; however, when the alloy content gradually increases, it is easy to cause the material to become more brittle, and it is easy to cause problems such as chipping when it is impacted during work. Secondly, most of the existing disc shears are made of full alloy metal, which will cause the price of the disc shear to remain high. For example, the reference CN201510401721.8 A longitudinal shearing disc blade and its manufacturing method.

[0003] The development of composite shear blades is imperative, but the current research directions of composite shear blades are mainly in the fields of composite coating, blade welding, bonding, etc. The coating technology is prone to fall off in hot rolling technology. Therefore, in order to solve the above problems, a silicon steel compound disc shear, an installation structure and a preparation method are proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a silicon steel compound disc shear, an installation structure and a preparation method to solve the problems raised in the above background technology, and to solve the problem of excessively high costs caused by the use of all alloy steel materials in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Silicon steel compound disc shears include a disc base body, on which a center hole is opened;

[0007] One side of the disc base is a working surface, and a step surface is provided on the side facing the working surface, and a shearing blade ring is installed on the step surface; positioning holes are provided on the disc base and the shearing blade ring, and positioning screws are installed to fix the two sets of positioning holes;

[0008] The material of the shear blade ring is silicon steel alloy material, which is divided into the following types according to the component materials:

[0009] C: 0.35-0.52 parts, Si: 1-4.5 parts, Mn: 0.3-0.5 parts, B: 0.05-0.23, Al: 2-3 parts, Cr: 3-7 parts, Ni: 2.5-3.4 parts, Ti: 3-5 parts, Mo: 2-4 parts, Co: 0.7-0.13 parts, P: 0.015-0.025 parts, the balance is Fe and trace residual impurities;

[0010] Among them, 0.109≤(B+Co) / (Fe+Cr+Ni)+(Cr+T i+Al+S i) / Fe≤0.275.

[0011] The present application is directed to the working state of the disc shear, and correspondingly strengthens the hardness, wear resistance and heat resistance of the working surface. Among the component materials, Ni improves the stability of the matrix face-centered cubic γ phase, improves the tendency of the heat-resistant alloy to precipitate various harmful phases, so that it can improve the strength of the alloy while maintaining good plasticity and toughness. Ni has high corrosion resistance to acids and alkalis, and has rust prevention and heat resistance at high temperatures, so it can be in direct contact with workpieces such as hot-rolled or heated strip steel. Adding the solid solution element Cr to the alloy material makes the heat-resistant alloy have a multi-component solid solution strengthening effect, thereby increasing the use temperature of the slider; adding Co ensures the high temperature creep strength of the heat-resistant alloy; combining B and Co to form a hard metal compound with Ni and / or Cr in the matrix, so that the dispersed distribution in the alloy plays a role of dispersion strengthening. After ensuring the precise addition of Co content, B is also combined to promote the precipitation of dispersed chromium-carbon, boron-chromium hard phase, plastic face-centered cubic structure solid solution and promote the formation of carbides at high temperatures. After comprehensive configuration, the hard alloy can improve its hardness and wear resistance, ensure excellent bonding strength, and still have high hardness and good oxidation resistance, impact resistance, thermal shock resistance and corrosion resistance at high temperatures. (B+Co) / (Fe+Cr+Ni) represents the proportion of B+Co content, while (Cr+Ti+Al+Si) / Fe represents the oxygen absorption capacity of the alloy material, which can remove the oxygen content in the alloy material. Too high a proportion will excessively enhance the metal properties, resulting in increased brittleness, such as cold brittleness. If the diameter is too small, the alloy may have a short service life and may be easily damaged.

[0012] Si melts in the alloy matrix to strengthen its solid solution, and Co has excellent corrosion resistance, heat resistance and oxidation resistance. Adding trace amounts of P can refine the crystal particle size and enhance its strength and wear resistance.

[0013] The addition of an appropriate amount of Si helps to increase the fluidity of the heat-resistant alloy and acts as a deoxidizer, reducing the formation of nickel oxide by nickel elements at high temperatures and oxygen elements, and easily generating pores during crystallization, so as to avoid a large number of residual pores, which may cause the connection parts to fall off easily; wherein, Si, Ti, Cr, and Al are all oxygen-absorbing elements, and Si easily generates compounds such as silicates, which affect the performance of the alloy; Ti easily absorbs oxygen and hydrogen during the alloy preparation process to form an oxide layer. The grains in the high-temperature alloy are easy to grow under high temperature conditions, resulting in unstable grain boundaries, easy formation of pores and cracks, and thus reducing the mechanical properties of the material. The addition of titanium can combine with impurity elements at the grain boundaries to form stable compounds, thereby inhibiting the growth of grains and stabilizing the grain boundary structure. The stability of this microstructure helps to improve the mechanical properties and heat resistance of the alloy. Cr can also react with oxygen in the alloy to form an oxide protective film, thereby enhancing the corrosion resistance of the alloy. In actual operation, it is possible to consider reducing the oxygen content by introducing nitrogen. Therefore, it is necessary to control the proportion of oxygen-absorbing elements in heat-resistant alloys. Too high a content will lead to a decrease in performance. For example, Si exceeding 4% will increase brittleness.

[0014] In a further technical solution, a connecting shell is provided with a connecting screw hole; the connecting shell is stepped, and a connecting disk is installed on the side opposite to the shear blade ring, and a built-in groove is opened on the connecting disk;

[0015] A bending ring groove is provided on one side of the shear blade ring opposite to the connecting shell.

[0016] The installation structure of the silicon steel compound disc shear, wherein a connecting piece is installed in the bending ring groove, and the connecting piece and the connecting disc are suitable for relative movable clamping;

[0017] The groove diameter of the built-in groove is provided with a segmented trapezoidal portion; the vertical cross-section of the bending ring groove is a symmetrical "L" shape, and the vertical distribution includes a corner edge and an inner groove edge, and the length of the corner edge is 0.3-0.4 of the length of the inner groove edge.

[0018] In a further technical solution, the connecting member includes an annular shell, a rubber ring is installed on one side of the annular shell, and the rubber ring is installed in the built-in groove; a lifting block is installed on the top of the annular shell; the connecting plate is suitable for extending into the bending annular groove, and the top of the lifting block is suitable for being movably clamped in the trapezoidal portion;

[0019] The lifting block is in a truncated cone shape, and a connecting spring is installed at the bottom, and the connecting spring is suitable for supporting the lifting block.

[0020] In a further technical solution, a plurality of mounting cylinders are distributed in the annular shell, and a connecting spring is installed in the mounting cylinder; one end of the connecting spring is fixedly connected to the inner wall of the mounting cylinder, and a sliding plate is installed at the other end, and a fixing column is installed on the side of the sliding plate away from the connecting spring, and one end of the fixing column away from the sliding plate is fixedly connected to the lifting block.

[0021] In a further technical solution, guide bar grooves are provided on both sides of the mounting tube, and limiting columns are provided on both sides of the sliding plate, and the limiting columns extend out of the guide bar grooves and are located in the annular shell.

[0022] In the present application, a trapezoidal portion is provided in the connecting disk, and a connecting piece is provided to effectively connect the trapezoidal portion; wherein a separation ring is provided on the shear blade ring to form a bending ring groove, which is beneficial to actual enterprise production and installation. The connecting piece includes a mounting cylinder, and the internal connecting spring plays a bearing role, which is used to support the lifting block to abut against the trapezoidal portion. The limiting columns on both sides of the sliding plate can be movable and limited in the guide groove, so that the upper and lower positions of the lifting block are limited. The rubber ring can be effectively and conveniently connected in the bending ring groove.

[0023] In a further technical solution, a support block is provided at the bottom of the connection shell, a temperature controller and a heating plate are installed in the support block, and the heating plate is suitable for heating the workpiece for cutting;

[0024] A position cylinder is arranged on the top of the support block, and the position cylinder is connected to the connecting shell by installing a slewing bearing; and a position plate is installed on the top of the position cylinder; two groups of bending parts are installed on the bottom of the support block, and an installation cavity is opened at the bottom of the bending part, and a heating plate is installed in the installation cavity; auxiliary wheels are installed at both ends of the heating plate, and the bottom height of the auxiliary wheels is not lower than the bottom height of the heating plate.

[0025] This application uses local heating to achieve the effect of facilitating cutting. The normal heating plate can be heated to above 400°C. Too high a temperature may cause the metallographic structure of the workpiece to change, so a more suitable temperature is required to achieve the effect of facilitating cutting. Auxiliary wheels are installed in the bending part to prevent the heating plate from overheating and fitting with the workpiece, resulting in adhesion.

[0026] In a further technical solution, the disc matrix is ​​divided into the following components according to the following materials: C: 0.38-0.45 parts, Si: 0.34-0.48 parts, Mn: 0.3-0.5 parts, Cr: 1.3-1.8 parts, Mo: 0.25-0.8 parts, P: 0-0.035 parts, Ni: 0.8-1.2 parts, and the remainder is iron and trace impurities; wherein 0.029≤(C+Cr) / Fe+(Si+Ni) / Fe≤0.037. The components in the disc matrix take into account the actual bearing capacity, and can be used to connect with the long axis, and the material of the disc matrix is ​​reduced relative to the hardness and strength of the shear ring, forming a reasonable situation in which the connection is softer and the working surface is harder, which is beneficial to the continuous operation of the cutting machine and can effectively reduce the price of the disc shear, thereby reducing costs.

[0027] A method for preparing a mounting structure of a silicon steel compound disc shear comprises the following steps:

[0028] Step 1: Making a shear blade ring by adding raw materials to a furnace, shaping the mold, and forging to obtain a shear blade ring;

[0029] Step 2, making a disc base, by adding raw materials to a furnace, shaping the mold, and forging to obtain the disc base;

[0030] Step 3, rough machining the shear blade ring and the disc base, opening a center hole in the shear blade ring, and machining the shear blade ring and the disc base to meet the rough machining standard;

[0031] Step 4, pre-heat treatment is performed on the shear blade ring, first normalizing heating at 920-980°C for 2 hours, air cooling to room temperature; then annealing, the shear blade ring is heated at 640-750°C for 3-5 hours;

[0032] Step 5, pre-heat treatment is performed on the disc substrate, first normalizing heating at 820-900°C for 2 hours, air cooling to room temperature; then annealing, cutting edge ring at 640-700°C for 3-5 hours;

[0033] Step 6: Perform ultrasonic flaw detection on the shear blade ring and the disc base; continue if they meet the standards, otherwise re-cast;

[0034] Step 7: vacuum welding, assembling the shear blade ring and the disc base, and welding the weld in a vacuum welding chamber;

[0035] Step 8: Remove impurities from the welding position and then forge it at a temperature not exceeding 400°C;

[0036] Step 9, grinding the surface of the disc shear, milling out a ring groove 1 with the inner groove edge as the groove diameter, grinding the surface outside the ring groove 1, and welding a separation ring; the separation ring and the ring groove 1 form a bending ring groove;

[0037] Step 10, modulated heat treatment, quenching the disc shear, oil quenching at 950-1050°C for 0.5h; post-tempering at 640-680°C for 1h;

[0038] Step 11, finishing, processing the heat-treated shear blade to the finished size by grinding, milling, turning, and wire cutting;

[0039] Step 12, testing: testing the hardness and metallographic structure of the composite shear blade;

[0040] Step 13, pull the rubber ring to install the annular housing in the bent annular groove; a mounting cylinder is pre-installed in the annular housing, and at least 6 sets are provided; a connecting spring, a sliding plate, a fixing column and a lifting block are installed in the mounting cylinder;

[0041] Step 14, install the support block, fix it to the bottom of the connecting shell through the position cylinder, and install a bending part at the bottom, install the auxiliary wheel and the heating plate in the bending part, and close the bending part.

[0042] Beneficial Effects

[0043] In the present application, a trapezoidal portion is provided in the connecting disk, and a connecting piece is provided to effectively connect the trapezoidal portion; wherein a separation ring is provided on the shear blade ring to form a bending ring groove, which is beneficial to actual enterprise production and installation. The connecting piece includes a mounting cylinder, and the internal connecting spring plays a bearing role, which is used to support the lifting block to abut against the trapezoidal portion. The limiting columns on both sides of the sliding plate can be movable and limited in the guide groove, so that the upper and lower positions of the lifting block are limited. The rubber ring can be effectively and conveniently connected in the bending ring groove.

[0044] The present application is directed to the working state of the disc shear, and correspondingly strengthens the hardness, wear resistance and heat resistance of the working surface. Among the component materials, Ni improves the stability of the matrix face-centered cubic γ phase, improves the tendency of the heat-resistant alloy to precipitate various harmful phases, so that it can improve the strength of the alloy while maintaining good plasticity and toughness. Ni has high corrosion resistance to acids and alkalis, and has rust prevention and heat resistance at high temperatures, so it can be in direct contact with workpieces such as hot-rolled or heated strip steel.

[0045] Adding the solid solution element Cr to the alloy material makes the heat-resistant alloy have a multi-element solid solution strengthening effect, thereby increasing the use temperature of the slider; adding Co ensures the high-temperature creep strength of the heat-resistant alloy; combining B and Co to form a hard metal compound with Ni and / or Cr in the matrix, so that it is dispersed in the alloy to play a role of dispersion strengthening. After ensuring the precise addition of Co content, it is also combined with B to promote the precipitation of dispersed chromium-carbon, boron-chromium hard phase, plastic face-centered cubic structure solid solution and promote the formation of carbides at high temperatures. After comprehensive configuration, the hardness and wear resistance of the cemented carbide can be improved, ensuring excellent bonding strength, while still having high hardness and good oxidation resistance, impact resistance, thermal shock resistance and corrosion resistance at high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 It is a shear cross-sectional view of the silicon steel compound disc of the present invention;

[0048] Figure 2 It is a front view of the silicon steel compound disc shear of the present invention;

[0049] Figure 3 It is a sectional view of another silicon steel compound disc of the present invention (installed on the major axis);

[0050] Figure 4 for Figure 3 A magnified view of part A;

[0051] Figure 5 is a structural diagram of the connection disk of the present invention;

[0052] Figure 6 It is a cross-sectional working diagram of the silicon steel compound disc shear of the present invention;

[0053] Figure 7 is a cross-sectional view of a connecting piece of the present invention;

[0054] Figure 8 A front view of another disc shear of the present invention;

[0055] Fig. 9 for Figure 7 A magnified view of part B;

[0056] In the figure: 1. disc base; 2. center hole; 3. shear blade ring; 4. positioning screw; 5. connecting shell; 6. connecting disk; 7. bending ring groove; 8. connecting piece; 9. support block; 10. heating plate; 11. auxiliary wheel; 12. separation ring; 13. position cylinder; 14. slewing bearing; 15. position plate; 61. trapezoidal part; 71. folded angle edge; 72. inner groove edge; 81. annular shell; 82. rubber ring; 83. lifting block; 84. connecting spring; 85. mounting cylinder; 86. sliding plate; 87. fixing column; 88. guide groove; 89. limiting column. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] The application principle of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] Example 1

[0060] See also Figure 1 and 2 As shown, it is an embodiment of the present invention, which provides a silicon steel compound disc shear, comprising a disc base 1, and a center hole 2 is opened on the disc base 1;

[0061] like Figure 1 As shown, one side of the disc base 1 is the working surface, and a stepped surface is arranged on the side facing the working surface, and a shear blade ring 3 is installed on the stepped surface; positioning holes are provided on the disc base 1 and the shear blade ring 3, and positioning screws 4 are installed to fix the two groups of positioning holes; when it is further necessary to install it on a long shaft, a keyway can be opened for installing a flat key.

[0062] The material of the shear blade ring 3 is silicon steel alloy material, which is divided into the following types according to the component materials:

[0063] C: 0.35-0.52 parts, Si: 1-4.5 parts, Mn: 0.3-0.5 parts, B: 0.05-0.23, Al: 2-3 parts, Cr: 3-7 parts, Ni: 2.5-3.4 parts, Ti: 3-5 parts, Mo: 2-4 parts, Co: 0.7-0.13 parts, P: 0.015-0.025 parts, the balance is Fe and trace residual impurities;

[0064] Among them, 0.109≤B+Co / (Fe+Cr+Ni)+Cr+Ti+Al+Si / Fe≤0.275.

[0065] The present application is directed to the working state of the disc shear, and correspondingly strengthens the hardness, wear resistance and heat resistance of the working surface. Among the component materials, Ni improves the stability of the matrix face-centered cubic γ phase, improves the tendency of the heat-resistant alloy to precipitate various harmful phases, so that it can improve the strength of the alloy while maintaining good plasticity and toughness. Ni has high corrosion resistance to acids and alkalis, and has rust prevention and heat resistance at high temperatures, so it can be in direct contact with workpieces such as hot-rolled or heated strip steel. Adding the solid solution element Cr to the alloy material makes the heat-resistant alloy have a multi-component solid solution strengthening effect, thereby increasing the use temperature of the slider; adding Co ensures the high temperature creep strength of the heat-resistant alloy; combining B and Co to form a hard metal compound with Ni and / or Cr in the matrix, so that the dispersed distribution in the alloy plays a role of dispersion strengthening. After ensuring the precise addition of Co content, B is also combined to promote the precipitation of dispersed chromium-carbon, boron-chromium hard phase, plastic face-centered cubic structure solid solution and promote the formation of carbides at high temperatures. After comprehensive configuration, the hard alloy can improve its hardness and wear resistance, ensure excellent bonding strength, and still have high hardness and good oxidation resistance, impact resistance, thermal shock resistance and corrosion resistance at high temperatures. (B+Co) / (Fe+Cr+Ni) represents the proportion of B+Co content, while (Cr+Ti+Al+Si) / Fe represents the oxygen absorption capacity of the alloy material, which can remove the oxygen content in the alloy material. Too high a proportion will excessively enhance the metal properties, resulting in increased brittleness, such as cold brittleness. If the diameter is too small, the alloy may have a short service life and may be easily damaged.

[0066] Si melts in the alloy matrix to strengthen its solid solution, and Co has excellent corrosion resistance, heat resistance and oxidation resistance. Adding trace amounts of P can refine the crystal particle size and enhance its strength and wear resistance.

[0067] The addition of an appropriate amount of Si helps to increase the fluidity of the heat-resistant alloy and acts as a deoxidizer, reducing the tendency of nickel to form nickel oxide with oxygen at high temperatures, and easily generating pores during crystallization, so as to avoid a large number of pores remaining, which may cause the connection parts to fall off easily; wherein, Si, Ti, Cr, and Al are all oxygen-absorbing elements, and Si easily generates compounds such as silicates, which affect the performance of the alloy; Ti easily absorbs oxygen and hydrogen during the alloy preparation process to form an oxide layer. The grains in the high-temperature alloy are easy to grow under high temperature conditions, resulting in unstable grain boundaries, easy formation of pores and cracks, and thus reducing the mechanical properties of the material. The addition of titanium can combine with impurity elements at the grain boundaries to form stable compounds, thereby inhibiting the growth of grains and stabilizing the grain boundary structure. The stability of this microstructure helps to improve the mechanical properties and heat resistance of the alloy. Cr can also react with oxygen in the alloy to form an oxide protective film, thereby enhancing the corrosion resistance of the alloy. In actual operation, it is possible to consider reducing the oxygen content by introducing nitrogen. Therefore, it is necessary to control the proportion of oxygen-absorbing elements in the heat-resistant alloy. Too high a content will lead to a decrease in performance. For example, Si exceeding 4% will increase brittleness. The disc matrix 1 is divided into the following components according to the component materials: C: 0.38-0.45 parts, Si: 0.34-0.48 parts, Mn: 0.3-0.5 parts, Cr: 1.3-1.8 parts, Mo: 0.25-0.8 parts, P: 0-0.035 parts, Ni: 0.8-1.2 parts, and the remainder is iron and trace impurities; among which 0.029≤C+Cr / Fe+Si+Ni / Fe≤0.037. The components in the disc matrix take into account the actual bearing capacity and can be used to connect with the long axis. Compared with the hardness and strength of the shear ring, the material of the disc matrix is ​​reduced, forming a reasonable situation in which the connection is softer and the working surface is harder, which is conducive to the continuous operation of the cutting machine and can effectively reduce the price of the disc shear, thereby reducing costs.

[0068] Example 2

[0069] like Figure 3-7As shown, on the basis of Example 1, in order to realize the convenient installation of the disc shears on the long axis and realize the locking of the mechanical mechanism, it is also possible to further support the shear blade ring. A further installation structure includes a connecting shell 5, on which a connecting screw hole is provided; the connecting shell 5 is stepped, and a connecting disk 6 is installed on the side opposite to the shear blade ring 3, and a built-in groove is provided on the connecting disk 6; a bending ring groove 7 is provided on the side of the shear blade ring 3 opposite to the connecting shell 5. The installation structure of the silicon steel compound disc shear, a connecting member 8 is installed in the bending ring groove 7, and the connecting member 8 and the connecting disk 6 are suitable for relative movable clamping; a segmented trapezoidal portion 61 is provided in the groove diameter of the built-in groove; the vertical cross-section of the bending ring groove 7 is a symmetrical "L" shape, and the vertical distribution includes a folded corner edge 71 and an inner groove edge 72, and the length of the folded corner edge 71 is 0.3-0.4 of the length of the inner groove edge 72. In this embodiment, Figure 4 shown.

[0070] like Figure 7 As shown, the connecting member 8 includes an annular shell 81, a rubber ring 82 is installed on one side of the annular shell 81, and the rubber ring 82 is installed in the built-in groove; a lifting block 83 is installed on the top of the annular shell 81; the connecting plate 6 is suitable for extending into the bending ring groove 7, and the top of the lifting block 83 is suitable for being movably clamped in the trapezoidal portion 61;

[0071] The lifting block 83 is in a truncated cone shape, and a connecting spring 84 is installed at the bottom. The connecting spring 84 is suitable for supporting the lifting block 83 .

[0072] A plurality of mounting tubes 85 are distributed in the annular housing 81, and are connected with the system part to form a plurality of mounting tubes. A connecting spring 84 is installed in the mounting tube 85; one end of the connecting spring 84 is fixedly connected to the inner wall of the mounting tube 85, and a sliding plate 86 is installed on the other end. A fixing column 87 is installed on the side of the sliding plate 86 away from the connecting spring 84, and one end of the fixing column 87 away from the sliding plate 86 is fixedly connected to the lifting block 83.

[0073] Guide strip grooves 88 are provided on both sides of the mounting tube 85, and the guide strip grooves 88 are located on the outside of the annular shell. Limiting columns 89 are provided on both sides of the sliding plate 86, and the limiting columns 89 extend out of the guide strip grooves 88 and are located in the annular shell 81. In the present application, a trapezoidal portion is provided in the connecting disk, and a connecting member is provided to effectively connect the trapezoidal portion; wherein a separation ring is provided on the shear blade ring to form a bending ring groove, which is beneficial to actual enterprise production and installation. The connecting member includes a mounting tube, and the internal connecting spring plays a bearing role, and is used to support the lifting block to abut against the trapezoidal portion. The limiting columns on both sides of the sliding plate can be movably limited in the guide strip groove, so that the upper and lower positions of the lifting block are limited. The rubber ring can be effectively and conveniently connected in the bending ring groove.

[0074] Example 3

[0075] like Figure 8 and 9 As shown, on the basis of Example 2, in order to further achieve the effect of heating and convenient cutting, a support block 9 is provided at the bottom of the connecting shell 5, and a temperature controller and a heating plate 10 are installed in the support block 9, and the heating plate 10 is suitable for heating the workpiece for cutting; a position cylinder 13 is provided on the top of the support block 9, and the position cylinder 13 is connected to the connecting shell 5 by installing a slewing bearing 14; and a position plate 15 is installed on the top of the position cylinder 13; two groups of bending parts are installed at the bottom of the support block 9, and an installation cavity is opened at the bottom of the bending part, and the heating plate 10 is installed in the installation cavity; auxiliary wheels 11 are installed at both ends of the heating plate 10, and the bottom height of the auxiliary wheel 11 is not lower than the bottom height of the heating plate 10.

[0076] A method for preparing a mounting structure of a silicon steel compound disc shear comprises the following steps:

[0077] Step 1, making the shear blade ring 3, by adding raw materials to a furnace, shaping the mold, and forging to obtain the shear blade ring 3;

[0078] Step 2, manufacturing the disc base 1, by adding raw materials to a furnace, shaping the mold, and forging to obtain the disc base 1;

[0079] Step 3, rough machining the shear blade ring 3 and the disc base 1, opening a center hole 2 on the shear blade ring 3, and machining the shear blade ring 3 and the disc base 1 to meet the rough machining standard;

[0080] Step 4, pre-heat treatment is performed on the shear blade ring 3, first normalizing heating at 920-980°C for 2 hours, air cooling to room temperature; then annealing, the shear blade ring 3640-750°C for 3-5 hours;

[0081] Step 5, pre-heat treatment is performed on the disc substrate 1, first normalizing heating at 820-900°C for 2 hours, air cooling to room temperature; then annealing, cutting edge ring at 3640-700°C for 3-5 hours;

[0082] Step 6: Perform ultrasonic flaw detection on the shear ring 3 and the disc base 1; continue if they meet the standards, otherwise re-cast;

[0083] Step 7: vacuum welding, combining the shear blade ring 3 and the disc base 1, and welding the weld in a vacuum welding chamber;

[0084] Step 8: Remove impurities from the welding position and then forge it at a temperature not exceeding 400°C;

[0085] Step 9, grinding the surface of the disc shear, milling out a ring groove 1 with the inner groove edge 72 as the groove diameter, grinding the surface outside the ring groove 1, and welding the separation ring 12; the separation ring 12 and the ring groove 1 form a bending ring groove 7;

[0086] Step 10, modulated heat treatment, quenching the disc shear, oil quenching at 950-1050°C for 0.5h; post-tempering at 640-680°C for 1h;

[0087] Step 11, finishing, processing the heat-treated shear blade to the finished size by grinding, milling, turning, and wire cutting;

[0088] Step 12, testing: testing the hardness and metallographic structure of the composite shear blade;

[0089] Step 13, pull the rubber ring 82 to install the annular housing 81 in the bent annular groove 7; a mounting tube 85 is pre-installed in the annular housing, and at least 6 groups are provided; a connecting spring 84, a sliding plate 86, a fixing column 87 and a lifting block 83 are installed in the mounting tube 85;

[0090] Step 14, install the support block 9, fix it to the bottom of the connecting shell 5 through the position cylinder 13, and install a position plate 15 on the top of the position cylinder. The position plate is used to be connected to the cutting machine. The slewing bearing in the position cylinder ensures that the long axis will not affect the bending part when rotating, and a bending part is installed at the bottom. Auxiliary wheels 11 and a heating plate 10 are installed in the bending part, and the bending part is closed.

[0091] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0092] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Silicon steel compound disc shear, characterized in that: It comprises a disc base (1), on which a central hole (2) is opened; One side of the disc base (1) is a working surface, and a stepped surface is provided on the side facing the working surface, and a shearing blade ring (3) is installed on the stepped surface; positioning holes are provided on the disc base (1) and the shearing blade ring (3), and positioning screws (4) are installed to fix the two groups of positioning holes; The material of the shear blade ring (3) is a silicon steel alloy material, which is divided into the following types according to the component materials: C: 0.35-0.52 parts, Si: 1-4.5 parts, Mn: 0.3-0.5 parts, B: 0.05-0.23 parts, Al: 2-3 parts, Cr: 3-7 parts, Ni: 2.5-3.4 parts, Ti: 3-5 parts, Mo: 2-4 parts, Co: 0.7-0.13 parts, P: 0.015-0.025 parts, the balance is Fe and trace residual impurities; Among them, 0.109≤(B+Co) / (Fe+Cr+Ni)+(Cr+Ti+Al+Si) / Fe≤0.

275.

2. The silicon steel compound disc shear according to claim 1 is characterized in that: It comprises a connection shell (5), on which a connection screw hole is provided; the connection shell (5) is stepped, and a connection disk (6) is installed on the side opposite to the shear blade ring (3), and a built-in groove is provided on the connection disk (6); A bending ring groove (7) is provided on one side of the shear blade ring (3) opposite to the connecting shell (5).

3. The installation structure of silicon steel compound disc shears according to claim 1 is characterized in that: It comprises the silicon steel compound disc shears as claimed in claim 2; a connecting piece (8) is installed in the bending ring groove (7), and the connecting piece (8) and the connecting disc (6) are suitable for relatively movable clamping; The groove diameter of the built-in groove is provided with a segmented trapezoidal portion (61); the vertical cross section of the bent ring groove (7) is a symmetrical "L" shape, and the vertical distribution includes a folded angle edge (71) and an inner groove edge (72), and the length of the folded angle edge (71) is 0.3-0.4 of the length of the inner groove edge (72).

4. The installation structure of silicon steel compound disc shears according to claim 1 is characterized in that: The connecting member (8) comprises an annular shell (81), a rubber ring (82) is installed on one side of the annular shell (81), and the rubber ring (82) is installed in the built-in groove; a lifting block (83) is installed on the top of the annular shell (81); the connecting plate (6) is suitable for extending into the bending annular groove (7), and the top of the lifting block (83) is suitable for being movably clamped in the trapezoidal portion (61); The lifting block (83) is in the shape of a truncated cone, and a connecting spring (84) is installed at the bottom. The connecting spring (84) is suitable for supporting the lifting block (83).

5. The installation structure of silicon steel compound disc shears according to claim 4 is characterized in that: A plurality of mounting tubes (85) are distributed in the annular shell (81), and a connecting spring (84) is installed in the mounting tube (85); one end of the connecting spring (84) is fixedly connected to the inner wall of the mounting tube (85), and a sliding plate (86) is installed at the other end, and a fixing column (87) is installed on the side of the sliding plate (86) away from the connecting spring (84), and one end of the fixing column (87) away from the sliding plate (86) is fixedly connected to the lifting block (83).

6. The installation structure of silicon steel compound disc shears according to claim 5 is characterized in that: Guide strip grooves (88) are provided on both sides of the installation cylinder (85), and limiting columns (89) are provided on both sides of the sliding plate (86). The limiting columns (89) extend out of the guide strip grooves (88) and are located in the annular housing (81).

7. The installation structure of silicon steel compound disc shears according to claim 6 is characterized in that: A support block (9) is arranged at the bottom of the connecting shell (5), a temperature controller and a heating plate (10) are installed in the support block (9), and the heating plate (10) is suitable for heating a workpiece for cutting; A position cylinder (13) is provided on the top of the support block (9), and the position cylinder (13) is connected to the connection shell (5) by installing a slewing bearing (14); and a position plate (15) is installed on the top of the position cylinder (13); Two groups of bent portions are installed at the bottom of the support block (9), and an installation cavity is opened at the bottom of the bent portion. A heating plate (10) is installed in the installation cavity; auxiliary wheels (11) are installed at both ends of the heating plate (10), and the bottom height of the auxiliary wheels (11) is not lower than the bottom height of the heating plate (10).

8. The installation structure of silicon steel compound disc shears according to claim 6 is characterized in that: The disc substrate (1) is divided into the following components according to the following materials: C: 0.38-0.45 parts, Si: 0.34-0.48 parts, Mn: 0.3-0.5 parts, Cr: 1.3-1.8 parts, Mo: 0.25-0.8 parts, P: 0-0.035 parts, Ni: 0.8-1.2 parts, and the remainder is iron and trace impurities; wherein 0.029≤(C+Cr) / Fe+(Si+Ni) / Fe≤0.

037.

9. A method for preparing the installation structure of the silicon steel compound disc shear according to claim 7, characterized in that: The following steps are involved: Step 1, making a shear blade ring (3), by adding raw materials to a furnace, shaping a mold, and forging to obtain a shear blade ring (3); Step 2, manufacturing the disc base (1), by adding raw materials to a furnace, shaping the mold, and forging to obtain the disc base (1); Step 3, rough machining the shear blade ring (3) and the disc base (1), opening a center hole (2) on the shear blade ring (3), and machining the shear blade ring (3) and the disc base (1) to meet the rough machining standard; Step 4, pre-heat treatment is performed on the shear blade ring (3), firstly normalizing heating at 920-980°C for 2 hours, and air cooling to room temperature; then annealing is performed at 640-750°C for 3-5 hours; Step 5, pre-heat treatment is performed on the disc substrate (1), firstly normalizing heating at 820-900°C for 2 hours, and air cooling to room temperature; then annealing is performed, and the shear ring (3) is heated at 640-700°C for 3-5 hours; Step 6, ultrasonically inspect the shear blade ring (3) and the disc base (1); if they meet the standards, continue; otherwise, re-cast; Step 7: vacuum welding, combining the shear blade ring (3) and the disc base (1), and welding the weld in a vacuum welding chamber; Step 8: Remove impurities from the welding position and then forge it at a temperature not exceeding 400°C; Step 9, grinding the surface of the disc shear, milling out a ring groove 1 with the inner groove edge (72) as the groove diameter, grinding the surface outside the ring groove 1, and welding a separation ring (12); the separation ring (12) and the ring groove 1 form a bending ring groove (7); Step 10, modulated heat treatment, quenching the disc shear, oil quenching at 950-1050°C for 0.5h; post-tempering at 640-680°C for 1h; Step 11, finishing, processing the heat-treated shear blade to the finished size by grinding, milling, turning, and wire cutting; Step 12, testing: testing the hardness and metallographic structure of the composite shear blade; Step 13, pull the rubber ring (82) to install the annular housing (81) in the bent annular groove (7); a mounting tube (85) is pre-installed in the annular housing, and at least 6 groups are provided; a connecting spring (84), a sliding plate (86), a fixing column (87) and a lifting block (83) are installed in the mounting tube (85); Step 14, install the support block (9), fix it to the bottom of the connecting shell (5) through the position cylinder (13), and install a bending part at the bottom, install the auxiliary wheel (11) and the heating plate (10) in the bending part, and close the bending part.

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