Powder alloy Damascus steel billet

Abstract

The utility model discloses a powder alloy damascene steel billet, which belongs to the technical field of metal materials, and comprises an accommodating part positioned on the outermost layer, a hollow accommodating cavity is formed in the accommodating part, and a plurality of first powder alloy layers and second powder alloy layers are filled in the accommodating cavity; and the first powder alloy layer and the second powder alloy layer are separated from each other through a separation layer. The powder alloy Damascus steel is used for solving the problems that a powder alloy Damascus steel material with more excellent performance is provided, and meanwhile powder alloy for manufacturing a powder alloy Damascus steel billet is inconvenient to stack and place during adding.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal materials, and particularly relates to a powder alloy Damascus steel billet. Background Art

[0002] Damascus steel is formed by repeatedly stacking and forging two or more kinds of steel. It has excellent toughness, high strength and high wear resistance, and presents beautiful Damascus patterns on the surface after grinding and etching.

[0003] With the exploration of the properties of different materials, powder alloys have unique chemical compositions and physical and mechanical properties that cannot be obtained by traditional casting processes. The porosity of powder alloys is controllable, the material structure is uniform, there is no macroscopic segregation, and it can be formed in one step. Moreover, powder alloy materials have excellent properties such as high strength, high hardness, high wear resistance, and high corrosion resistance. Therefore, using powder alloys as the forging of Damascus steel can produce composite materials with more excellent properties. However, due to the fact that the shape of powder alloys is powder, their properties are not like those of traditional steel, being particularly dispersed, and it is not easy to form by themselves or stack according to requirements. Therefore, it is difficult to manufacture such billets. Thus, a more suitable powder alloy Damascus steel billet is proposed to facilitate the production of powder alloy Damascus steel with lower production costs and better performance. Summary of the Invention

[0004] Aiming at the above problems, the present invention provides a powder alloy Damascus steel billet to solve the problems of providing a powder alloy Damascus steel material with more excellent properties and the inconvenience of stacking and shaping the powder alloy when adding it during the production of the powder alloy Damascus steel billet.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A powder alloy Damascus steel billet includes a containing member located on the outermost layer. The containing member has a hollow cavity, and the cavity is filled with a plurality of layers of a first powder alloy layer and a second powder alloy layer, and the first powder alloy layer and the second powder alloy layer are separated from each other by a separation layer.

[0007] Compared with the prior art, the beneficial effect of the present invention is that: by providing the containing member, a better containing cavity can be provided for the powder alloy, so that the powder alloy can be arranged into a layered structure such as the first powder alloy layer and the second powder alloy layer, thereby achieving the stacking effect of making Damascus steel from the powder alloy. The separation layer separates the two different powder alloys of the first powder alloy layer and the second powder alloy layer, which can avoid the mutual mixing of the two alloy powders during the processing, so that it is convenient to produce Damascus patterns, and the performance of the better composite material and the more beautiful appearance effect can be exerted.

[0008] As a further improvement of the above solution, a separation layer is also provided between the accommodating member and the first powder alloy layer and between the accommodating member and the second powder alloy layer.

[0009] The technical effect of the above improvement is that the separation layer also plays a role in separating the accommodating member from the first powder alloy layer and the second powder alloy layer, so that the alloy powders used in the first powder alloy layer and the second powder alloy layer can be separated by the separation layers at the upper and lower positions in a space, thereby providing a more stable space and maintaining the material properties of the alloy powders.

[0010] As a further improvement of the above solution, the accommodating member is a hollow cubic sleeve made of a plurality of steel plates, and there are welding parts at the contact positions between two adjacent steel plates.

[0011] As a further improvement of the above solution, the steel plate is made of carbon steel or low alloy steel material with a thickness of 5 - 20 mm.

[0012] The technical effect of the above improvement is that the accommodating member made by welding steel plates can have a lower manufacturing cost, and the accommodating member is also very convenient for shaping and does not require high-precision equipment for processing.

[0013] As a further improvement of the above solution, the first powder alloy layer and the second powder alloy layer are alternately arranged in sequence from bottom to top, and the laying thickness ratio between two adjacent first powder alloy layers and second powder alloy layers is 1:1 - 1:5 in the way of thin:thick.

[0014] The technical effect of the above improvement is that by varying the laying thickness of the first powder alloy layer and the second powder alloy layer, different thicknesses can be selected according to different powder alloy materials, which is convenient for the steel billet processed after the steel billet is formed to have the best performance and at the same time provide a better appearance.

[0015] As a further improvement of the above solution, the thickness of the separation layer is less than or equal to the laying thickness of the thinnest layer among its adjacent first powder alloy layer and second powder alloy layer.

[0016] As a further improvement of the above solution, the thickness of the separation layer is less than or equal to 1 / 2 of the laying thickness of the thinnest layer among its adjacent first powder alloy layer and second powder alloy layer.

[0017] The technical effect of the above improvement is that the separation layer is used to separate the alloy powders of adjacent different first powder alloy layers and second powder alloy layers, and its thickness is less than the laying thickness of the smallest alloy powder, which is convenient for the alloy powders to be effectively extruded and compacted during the pressing process after the entire steel billet is laid, thereby ensuring the compactness of the alloy powders in the whole steel billet. Description of the Drawings

[0018] Figure 1 This is the overall structural schematic diagram of the present invention.

[0019] In the figure: 10, receiving member; 11, first powder alloy layer; 12, second powder alloy layer; 13, separation layer; 14, welding portion. Specific Embodiment

[0020] In order to enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below in conjunction with embodiments. The description of this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0021] As Figure 1 shown, the specific solution of this embodiment is: a powder alloy Damascus steel billet, including a receiving member 10 located on the outermost layer. The receiving member 10 has a hollow cavity, and the cavity is filled with several layers of first powder alloy layer 11 and second powder alloy layer 12, and the first powder alloy layer 11 and the second powder alloy layer 12 are separated from each other by a separation layer 13; a separation layer 13 is also provided between the receiving member 10 and the first powder alloy layer 11 and between the receiving member 10 and the second powder alloy layer 12. Setting the first powder alloy layer 11 and the second powder alloy layer 12 in the middle position of the separation layer 13 can ensure that the filled alloy powder has a stable space within the range separated by this single material of the separation layer 13. After forming the billet, it has a good layered structure, which is convenient for the subsequent formation of Damascus steel patterns and can maintain excellent material properties.

[0022] The receiving member 10 is a hollow cubic sleeve made of several steel plates, and the contact position between two adjacent steel plates has a welding portion 14, and the welding portion 14 is specifically a weld seam; during the production process of this billet, first, five steel plates need to be selected and spliced and welded into a box shape with an open top, and then stacked layer by layer according to the arrangement of the first powder alloy layer 11, the second powder alloy layer 12, and the separation layer 13. After stacking is completed, pressure is applied, that is, pressed for 20 - 90 min, and the unit pressure is maintained at 10 - 100 MPa to compact the powder; finally, the assembled composite billet is sent into a vacuum packaging device, the air in the jacket box is evacuated, and then the jacket is sealed and welded; thus, the billet of the present application is obtained.

[0023] As a preferred mode of the above embodiment, the steel plate is made of carbon steel or low alloy steel material with a thickness of 5 - 20 mm.

[0024] The first powder alloy layer 11 and the second powder alloy layer 12 are arranged alternately from bottom to top in sequence, and the laying thickness ratio between two adjacent first powder alloy layers 11 and second powder alloy layers 12 is 1:1 - 1:5 in the way of thin: thick. This way only differentiates the thickness of the laid alloy powders, without differentiating different materials or positions;

[0025] That is, when the first powder alloy layer 11 is thick and the second powder alloy layer 12 is thin, the ratio of the second powder alloy layer 12 to the first powder alloy layer 11 is 1:1 - 1:5; when the first powder alloy layer 11 is thin and the second powder alloy layer 12 is thick, the ratio of the first powder alloy layer 11 to the second powder alloy layer 12 is 1:1 - 1:5.

[0026] The thickness of the separation layer 13 is less than or equal to the thickness of the thinnest layer among its adjacent first powder alloy layer 11 and second powder alloy layer 12. Preferably, the thickness of the separation layer 13 is less than or equal to 1 / 2 of the thickness of the thinnest layer among its adjacent first powder alloy layer 11 and second powder alloy layer 12.

[0027] The following are two cases of manufacturing powder alloy Damascus steel billets:

[0028] Case 1: M390 + 8Cr13MoV powder alloy Damascus steel billet

[0029] 1. Clean the surface of the raw material. Select a 3Cr13 steel plate as the separation layer 13, and use ultrasonic cleaning to remove the oil and impurities on the surface of the 3Cr13 stainless steel material.

[0030] 2. Prepare the cladding: The cladding is welded with Q235 low-carbon steel with a thickness of 15 mm. Gas shielded welding is used to weld 5 sides of the cladding, and the upper end face is reserved with an opening for filling raw materials.

[0031] 3. Fill the raw materials: Place a piece of 3Cr13 stainless steel at the bottom of the cladding. Select M390 powder as the first powder alloy layer 11 and 8Cr13MoV powder as the second powder alloy layer 12. Then, install the plates into the cladding box in the order of one layer of M390 powder, 3Cr13 stainless steel, one layer of 8Cr13MoV powder, and one layer of 3Cr13 stainless steel. The thickness of the 3Cr13 stainless steel is 1 mm, the thickness of one layer of M390 powder is 5 mm, and the thickness of one layer of 8Cr13MoV powder is 5 mm. Each of the two powders is paved for 25 layers, with a total thickness of 301 mm. After filling, cover the upper cover plate of the cladding.

[0032] 4. Powder pre-pressing: Put the entire cladding blank under a pressure device and apply pressure to the powder along the end cover plate. The unit pressure is 40 MPa, and it is pressed for 40 minutes to compact the powder.

[0033] 5. Vacuum encapsulation: Transfer the billet sleeve into a vacuum pumping device, evacuate the air inside the sleeve box, with a vacuum degree of 10 Pa, and then use an electron beam welder to weld and seal the end cover plate to obtain the steel billet.

[0034] Case 2: 10Cr15CoMoV + 6Cr13 powder alloy Damascus steel

[0035] 1. Clean the surface of the raw materials. Select a 3Cr13 steel plate as the separator layer 13, and use ultrasonic cleaning to remove the oil and impurities on the surface of the 3Cr13 stainless steel.

[0036] 2. Sleeve preparation: The sleeve is welded with Q355 low alloy with a thickness of 10 mm, and the five surfaces of the sleeve are welded by gas shielded welding, leaving the upper end open for filling the raw materials.

[0037] 3. Raw material filling: Place a 3Cr13 stainless steel at the bottom of the sleeve. Select 10Cr15CoMoV powder as the first powder alloy layer 11 and 6Cr13 powder as the second powder alloy layer 12. Then, install the plates into the sleeve box in the order of one layer of 10Cr15CoMoV powder, 3Cr13 stainless steel, one layer of 6Cr13 powder, and one layer of 3Cr13 stainless steel. Each of the two powders is laid 20 layers, the thickness of the 3Cr13 stainless steel is 1 mm, the thickness of each of the 5 layers of 10Cr15CoMoV powder in the lower and upper layers is 6 mm, the thickness of each of the 5 layers of 6Cr13 powder in the lower and upper layers is 4 mm, the thickness of each of the 10 layers of 10Cr15CoMoV powder in the middle is 3 mm, the thickness of each of the 10 layers of 6Cr13 powder in the middle is 6 mm, and the total thickness is 231 mm. After filling, cover the upper end cover plate of the sleeve.

[0038] 4. Powder pre-pressing: Place the entire billet sleeve under a pressure device and apply pressure to the powder along the end cover plate, with a unit pressure of 50 MPa for 30 minutes to compact the powder.

[0039] 5. Vacuum encapsulation: Transfer the billet sleeve into a vacuum pumping device, evacuate the air inside the sleeve box, with a vacuum degree of 10 Pa; then use an electron beam welder to weld and seal the end cover plate to obtain the steel billet.

[0040] It should be noted that in this text, the terms "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Specific examples are used in this text to elaborate on the principles and implementation manners of the technical solutions of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be pointed out that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solutions of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A powder alloy Damascus steel billet, characterized in that: The invention comprises a container (10) located at the outermost layer, wherein the container (10) has a hollow cavity, wherein the cavity is filled with a plurality of first powder alloy layers (11) and second powder alloy layers (12), and the first powder alloy layers (11) and the second powder alloy layers (12) are separated from each other by a separation layer (13).

2. The powder alloy Damascus steel billet according to claim 1, characterized in that: A separation layer (13) is also provided between the receiving part (10) and the first powder alloy layer (11) and between the receiving part (10) and the second powder alloy layer (12).

3. The powder alloy Damascus steel billet according to claim 1, characterized in that: The receiving member (10) is a hollow cubic sleeve made of a plurality of steel plates, and a welding portion (14) is provided at a contact position between two adjacent steel plates.

4. The powder alloy Damascus steel billet according to claim 3, characterized in that: The steel plate is made of carbon steel or low alloy steel with a thickness of 5-20 mm.

5. The powder alloy Damascus steel billet according to claim 1, characterized in that: The first powder alloy layers (11) and the second powder alloy layers (12) are arranged alternately from bottom to top, and the thickness of adjacent first powder alloy layers (11) and second powder alloy layers (12) is laid in a thin:thick manner with a thickness ratio of 1:1-1:

5.

6. The powder alloy Damascus steel billet according to claim 1, characterized in that: The thickness of the separation layer (13) is less than or equal to the thickness of the thinnest layer of the adjacent first powder alloy layer (11) and the second powder alloy layer (12).

7. The powder alloy Damascus steel billet according to claim 6, characterized in that: The thickness of the separation layer (13) is less than or equal to 1 / 2 of the thickness of the thinnest layer of the adjacent first powder alloy layer (11) and the second powder alloy layer (12).

Images