Corrosion-resistant nickel-based alloy cold rolling method and device

Abstract

The invention discloses a corrosion-resistant nickel-based alloy cold rolling method and device, and the method comprises the following steps: step 1, preparing a nickel-based alloy raw material which comprises Ni, Cr, Mo, Fe and other elements and has good corrosion resistance; 2, the raw materials are placed in an integrated cold rolling mill, the cold rolling mill comprises two rollers and a heat treatment device, the rollers are made of common steel, the surfaces of the rollers are polished, and a special coating is sprayed on the surfaces of the rollers; according to the cold rolling method, efficient cold rolling machining of the nickel-based alloy is achieved, it is guaranteed that the performance of the nickel-based alloy is not damaged, and the corrosion resistance of the alloy is improved; according to the cold rolling mill, a cold rolling mill in the prior art is improved and optimized, the lifting feeding structure is designed, an operator can conveniently feed raw materials into the position between the two rollers during machining, the machining convenience and the machining efficiency are optimized, and the height of the lifting feeding structure can be adaptively and flexibly adjusted.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical engineering, and in particular relates to a corrosion-resistant nickel-based alloy cold rolling method and device. Background Art

[0002] Nickel-based alloy is a high-temperature alloy mainly used to manufacture high-temperature structural parts and corrosion-resistant materials in the fields of aerospace, nuclear industry and petrochemical industry. However, since nickel-based alloys often have the characteristics of high hardness, high heat resistance, high toughness and high corrosion resistance, it is difficult to perform plastic deformation during processing. Usually, a combination of hot processing and cold processing is used for processing. Traditional cold processing methods often cause certain damage to the performance of nickel-based alloys, and traditional cold rolling devices are not designed with a structure that is convenient for feeding nickel-based alloys, and are not easy to process. For this reason, the present invention proposes a corrosion-resistant nickel-based alloy cold rolling method and device. Summary of the invention

[0003] The object of the present invention is to provide a corrosion-resistant nickel-based alloy cold rolling method and device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a corrosion-resistant nickel-based alloy cold rolling method, comprising the following steps:

[0005] Step 1: prepare a nickel-based alloy raw material, the raw material includes elements such as Ni, Cr, Mo, Fe, etc., and has good corrosion resistance;

[0006] Step 2: placing the raw materials in an integrated cold rolling mill, which includes two rollers and a heat treatment device, wherein the rollers are made of ordinary steel, the surface of which is polished and sprayed with a special coating;

[0007] Step 3: According to the size of the raw material and the specifications of the cold rolling mill, adjust the spacing of the rollers to ensure that the raw material can be evenly stressed during the cold rolling process and achieve plastic deformation;

[0008] Step 4: subjecting the raw materials to multiple steps of first cold rolling, intermediate annealing, finishing rolling and subsequent annealing, wherein the pressure of the first cold rolling is 100-200 MPa, the temperature of the intermediate annealing is 800-1000°C, the pressure of the finishing rolling is 50-100 MPa, and the temperature of the subsequent annealing is 500-800°C;

[0009] Step 5: Deburr and clean the processed nickel-based alloy to obtain a smooth, flat, and precisely dimensioned corrosion-resistant nickel-based alloy.

[0010] Preferably, in the step 1, any scratches or oxides should be avoided on the surface of the raw material to avoid affecting the alloy properties during subsequent processing. In the step 5, mechanical or chemical methods can be used for deburring. A suitable cleaning agent should be selected for cleaning, and attention should be paid to cleaning and drying to ensure that the alloy surface is clean and smooth.

[0011] A cold rolling device applied to the cold rolling method of corrosion-resistant nickel-based alloy comprises a cold rolling mill body and a top seat fixed on the top of the cold rolling mill body, a top plate is also fixed on the top of the top seat, a first pressure roller and a second pressure roller are rotatably mounted on the inner side of the top seat, and two lifting and feeding structures are symmetrically arranged on the front surface of the top seat, and the lifting and feeding structure comprises an L-shaped lifting plate mounted on the front surface of the top seat.

[0012] The limit structure also includes an L-shaped pick plate arranged on the front surface of the L-shaped lifting plate, and the front ends of the two connecting rods are both inserted into the front surface of the L-shaped lifting plate and fixed to the L-shaped pick plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The cold rolling method proposed in the present invention realizes efficient cold rolling processing of nickel-based alloys, ensuring that their performance is not damaged. Although intermediate annealing is required to meet the cold rolling requirements, the use of the intermediate annealing step can promote the distribution of chemical elements in the raw materials, thereby further improving the corrosion resistance of the alloy. At the same time, the roller made of ordinary steel is lower in cost and easier to process than the traditional tungsten steel roller, and the special coating sprayed can improve the hardness and wear resistance of the roller surface, reduce its service life, and thus reduce the processing cost;

[0015] 2. The present invention improves and optimizes the cold rolling mill in the prior art and designs a lifting and feeding structure, which can facilitate operators to feed raw materials between two rollers during processing, optimize processing convenience and efficiency, and the height of the lifting and feeding structure can be flexibly adjusted adaptively, thereby improving the convenience and flexibility of the entire cold rolling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flow chart of the method of the present invention;

[0017] Figure 2 It is a structural diagram of the device of the present invention;

[0018] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle lifting feeding structure;

[0019] Figure 4 It is a top cross-sectional view of the lifting and feeding structure of the present invention;

[0020] Figure 5 For the present invention Figure 4 A partial enlarged view of the middle A area;

[0021] In the figure: 1. cold rolling mill body; 2. top seat; 3. top plate; 4. pressure roller 1; 5. pressure roller 2; 6. lifting feed structure; 61. L-shaped lifting plate; 62. T-shaped slide groove; 63. limiting structure; 631. L-shaped dial plate; 632. limiting clamping rod; 633. limiting clamping groove; 634. inner groove; 635. spring; 636. inner block; 637. connecting rod; 638. rod hole; 64. T-shaped inner slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example

[0024] See also Figures 1 to 5 , is an embodiment of the present invention, which provides a technical solution: a corrosion-resistant nickel-based alloy cold rolling method, comprising the following steps:

[0025] Step 1: prepare a nickel-based alloy raw material, the raw material includes elements such as Ni, Cr, Mo, Fe, etc., and has good corrosion resistance;

[0026] Step 2: placing the raw materials in an integrated cold rolling mill, which includes two rollers and a heat treatment device, wherein the rollers are made of ordinary steel, the surface of which is polished and sprayed with a special coating, specifically a Teflon coating, to improve its surface hardness and wear resistance;

[0027] Step 3: According to the size of the raw material and the specifications of the cold rolling mill, adjust the spacing of the rollers to ensure that the raw material can be evenly stressed during the cold rolling process and achieve plastic deformation;

[0028] Step 4: subjecting the raw materials to multiple steps of first cold rolling, intermediate annealing, finishing rolling and subsequent annealing, wherein the pressure of the first cold rolling is 100 MPa, the temperature of the intermediate annealing is 800°C, the pressure of the finishing rolling is 50 MPa, and the temperature of the subsequent annealing is 500°C;

[0029] Step 5: Deburr and clean the processed nickel-based alloy to obtain a smooth, flat, and precisely dimensioned corrosion-resistant nickel-based alloy.

[0030] Among them, in step one, any scratches or oxides should be avoided on the surface of the raw material to avoid affecting the performance of the alloy during subsequent processing. In step five, mechanical or chemical methods can be used for deburring. When cleaning, a suitable cleaning agent should be selected, and attention should be paid to cleaning and drying to ensure that the surface of the alloy is clean and smooth.

[0031] A cold rolling device applied to the cold rolling method of corrosion-resistant nickel-based alloy comprises a cold rolling machine body 1 and a top seat 2 fixed on the top of the cold rolling machine body 1, a top plate 3 is also fixed on the top of the top seat 2, a pressure roller 4 and a pressure roller 5 are rotatably installed on the inner side of the top seat 2, and two lifting and feeding structures 6 are symmetrically arranged on the front surface of the top seat 2. The lifting and feeding structure 6 comprises an L-shaped lifting plate 61 installed on the front surface of the top seat 2. When feeding in the later stage, the raw material sheet can be placed on the two left-right symmetrical L-shaped lifting plates 61 and gradually pushed between the pressure roller 4 and the pressure roller 5 for cold rolling, thereby playing an auxiliary lifting effect on the raw material sheet and facilitating feeding.

[0032] Among them, the lifting and feeding structure 6 also includes a T-shaped slide groove 62 opened on the front surface of the top seat 2, and a T-shaped inner sliding block 64 is slidably installed in the T-shaped slide groove 62. The front end of the T-shaped inner sliding block 64 extends to the front surface of the top seat 2 and is fixed to the L-shaped lifting plate 61. The lifting and feeding structure 6 also includes a limiting structure 63. The limiting structure 63 includes an inner groove 634 opened inside the L-shaped lifting plate 61, and a spring 635 and an inner block 636 are installed in the inner groove 634. The rear surface of the inner block 636 is welded and fixed with a limiting clamping rod 632. The inner wall of the T-shaped slide groove 62 is evenly provided with a plurality of limiting clamping grooves 633 corresponding to the limiting clamping rod 632. The rear end of the limiting clamping rod 632 passes through the T-shaped inner sliding block 64 and is inserted into one of the limiting clamping grooves 633, so that the L-shaped lifting plate 61 and the T-shaped inner sliding block are locked during daily use. The limiting structure 63 also includes an L-shaped plate 631 arranged on the front surface of the L-shaped lifting plate 61, and two connecting rods 637 are fixed on the front surface of the inner block 636, and the front ends of the two connecting rods 637 are all penetrated to the front surface of the L-shaped lifting plate 61 and fixed to the L-shaped plate 631. The later operator only needs to pull the L-shaped plate 631 forward to make the connecting rod 637 move forward with the inner block 636 and make the spring 635 compressed, so that the limiting card rod 632 can be moved out of the limiting card groove 633, thereby releasing the limiting of the T-shaped inner slide block 64 and realizing the up and down sliding adjustment of the L-shaped lifting plate 61 and the T-shaped inner slide block 64. The front surface of the L-shaped lifting plate 61 is provided with a rod hole 638 which is communicated with the inner groove 634, and the rod hole 638 corresponds to the connecting rod 637, so that the connecting rod 637 can pass through smoothly.

[0033] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant nickel-based alloy cold rolling method, characterized in that: The following steps are involved: Step 1: prepare a nickel-based alloy raw material, the raw material includes elements such as Ni, Cr, Mo, Fe, etc., and has good corrosion resistance; Step 2: placing the raw materials in an integrated cold rolling mill, which includes two rollers and a heat treatment device, wherein the rollers are made of ordinary steel, the surface of which is polished and sprayed with a special coating; Step 3: According to the size of the raw material and the specifications of the cold rolling mill, adjust the spacing of the rollers to ensure that the raw material can be evenly stressed during the cold rolling process and achieve plastic deformation; Step 4: subjecting the raw materials to multiple steps of first cold rolling, intermediate annealing, finishing rolling and subsequent annealing, wherein the pressure of the first cold rolling is 100-200 MPa, the temperature of the intermediate annealing is 800-1000°C, the pressure of the finishing rolling is 50-100 MPa, and the temperature of the subsequent annealing is 500-800°C; Step 5: Deburr and clean the processed nickel-based alloy to obtain a smooth, flat, and precisely dimensioned corrosion-resistant nickel-based alloy.

2. A corrosion-resistant nickel-based alloy cold rolling method according to claim 1, characterized in that: In the step 1, any scratches or oxides should be avoided on the surface of the raw material to avoid affecting the alloy properties during subsequent processing.

3. A corrosion-resistant nickel-based alloy cold rolling method according to claim 1, characterized in that: In step 5, mechanical or chemical methods can be used for deburring, and a suitable cleaning agent should be selected for cleaning, and attention should be paid to cleaning and drying to ensure that the surface of the alloy is clean and smooth.

4. A cold rolling device used in any one of the corrosion-resistant nickel-based alloy cold rolling methods as claimed in claim 1 to 3, comprising a cold rolling mill body (1) and a top seat (2) fixed on the top of the cold rolling mill body (1), a top plate (3) is also fixed on the top of the top seat (2), and a first pressing roller (4) and a second pressing roller (5) are rotatably mounted on the inner side of the top seat (2), characterized in that: Two lifting and feeding structures (6) are symmetrically arranged on the front surface of the top seat (2), and the lifting and feeding structures (6) include an L-shaped lifting plate (61) installed on the front surface of the top seat (2).

5. A corrosion-resistant nickel-based alloy cold rolling device according to claim 4, characterized in that: The lifting and feeding structure (6) also includes a T-shaped slide groove (62) opened on the front surface of the top seat (2), and a T-shaped inner slider (64) is slidably installed in the T-shaped slide groove (62). The front end of the T-shaped inner slider (64) extends to the front surface of the top seat (2) and is fixed to the L-shaped lifting plate (61). The lifting and feeding structure (6) also includes a limiting structure (63).

6. A corrosion-resistant nickel-based alloy cold rolling device according to claim 5, characterized in that: The limiting structure (63) comprises an inner groove (634) provided inside the L-shaped lifting plate (61), a spring (635) and an inner block (636) being installed inside the inner groove (634), a limiting clamping rod (632) being fixed on the rear surface of the inner block (636), a plurality of limiting clamping grooves (633) being evenly provided on the inner wall of the T-shaped slide groove (62), and a rear end of the limiting clamping rod (632) passing through the T-shaped inner slide block (64) and being inserted into one of the limiting clamping grooves (633).

7. A corrosion-resistant nickel-based alloy cold rolling device according to claim 6, characterized in that: The limiting structure (63) also includes an L-shaped shifting plate (631) arranged on the front surface of the L-shaped lifting plate (61), and two connecting rods (637) are fixed to the front surface of the inner block (636), and the front ends of the two connecting rods (637) both penetrate the front surface of the L-shaped lifting plate (61) and are fixed to the L-shaped shifting plate (631).

8. The corrosion-resistant nickel-based alloy cold rolling device according to claim 7, characterized in that: The front surface of the L-shaped lifting plate (61) is provided with a rod hole (638) communicating with the inner groove (634), and the rod hole (638) corresponds to the connecting rod (637).

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