A method of metal working

Abstract

The embodiment of the present application discloses a metal processing method. The processing method comprises the following steps: providing a first blank and a second blank made of the same material, stacking the second blank on the first blank to form a blank body, annealing the blank body, and putting the annealed blank body into a mold and performing oil pressure. The embodiment of the present application provides a metal processing method with simple steps and high efficiency, avoids repeatedly roughening and pressing the blank and annealing, and does not need to pour the blank, thereby simplifying the processing link, reducing the cost of labor and material links, and finally making the details of the metal handicraft more delicate and exquisite.

Description

Technical Field

[0001] This invention relates to processing technology, and more specifically to a metal processing method. Background Technology

[0002] Metal crafts are handicrafts made from metal materials such as gold, silver, copper, iron, and tin, or mainly metal materials supplemented with other materials. They have a heavy, majestic, luxurious, elegant, and exquisite style and are suitable for use as decorations or collectibles.

[0003] Relief is a common artistic expression in metal crafts. Depending on the thickness of the relief, the process can be divided into high relief, medium relief, and low relief. High relief produces a more three-dimensional and aesthetically pleasing effect after imprinting, but it also increases the difficulty of the process. To ensure that the fullness of the pattern on the blank matches the fullness of the pattern on the mold surface, multiple imprinting processes are usually required to fully imprint the pattern on the blank. Alternatively, a blank matching the mold shape may need to be created. Another method is casting, but casting results in less detailed and layered patterns. Both methods are complex and involve numerous steps. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a metal processing method that can process metal crafts with high relief in fewer steps.

[0005] This invention provides a metal processing method, the metal processing method comprising:

[0006] A first blank having a first predetermined thickness and a second blank having a second predetermined thickness are provided;

[0007] The second blank is stacked on the first blank to form a blank body;

[0008] The embryo is annealed.

[0009] The annealed preform is placed into a mold and pressure is applied.

[0010] The first blank and the second blank are made of the same material.

[0011] Further, providing a first blank having a first predetermined thickness and a second blank having a second predetermined thickness includes:

[0012] The metal raw material is rolled to a first predetermined thickness and then cut to form a first billet;

[0013] The first blank is placed into the mold and pressure is applied;

[0014] The second predetermined thickness of the second blank is determined based on the thickness of the first blank after pressing and the inner wall dimensions of the mold.

[0015] The metal raw material is rolled to a second predetermined thickness and cut to form a second billet.

[0016] Further, the step of stacking the second billet on the first billet to form a blank includes:

[0017] The predetermined position of the first blank is determined based on the surface pattern of the first blank after pressing and the internal pattern of the mold;

[0018] The second blank is stacked at the predetermined position of the first blank to form a blank body.

[0019] Further, providing a first blank having a first predetermined thickness and a second blank having a second predetermined thickness includes:

[0020] The first predetermined thickness of the first blank and the second predetermined thickness of the second blank are determined based on the height of the inner wall of the mold;

[0021] The metal raw material is rolled to a first predetermined thickness and then cut to form a first billet;

[0022] The metal raw material is rolled to a second predetermined thickness and then cut to form a second billet;

[0023] Wherein, the sum of the first predetermined thickness and the second predetermined thickness is greater than the total thickness.

[0024] Further, the step of stacking the second billet on the first billet to form a blank includes:

[0025] The predetermined position of the first blank is determined according to the position of the pattern on the inner wall of the mold;

[0026] The second blank is stacked at the predetermined position of the first blank to form a blank body.

[0027] Furthermore, the annealing temperature of the embryo is 600℃-900℃.

[0028] Further, the step of placing the annealed preform into the mold and applying pressure includes:

[0029] The embryo is placed in a hydraulic press for pressing.

[0030] Furthermore, the pressure of the hydraulic press is 30 tons to 3500 tons.

[0031] Furthermore, both the first and second blanks are made of metal.

[0032] Furthermore, the first and second blanks are made of precious metals.

[0033] This invention provides a metal processing method. The method includes providing a first blank and a second blank of the same material, stacking the second blank on the first blank to form a blank body, annealing the blank body, and placing the annealed blank body into a mold and applying hydraulic pressure. Through the above steps, this invention provides a relatively simple and efficient metal processing method that can process metal crafts with high relief using only a few steps. Attached Figure Description

[0034] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings, in which:

[0035] Figure 1 This is a top view of a metal craft provided in an embodiment of the present invention;

[0036] Figure 2 This is a side view of a metal craft provided in an embodiment of the present invention;

[0037] Figure 3 This is a flowchart of the metal processing method provided in the embodiments of the present invention;

[0038] Figure 4 This is a flowchart of a method for providing a first billet and a second billet according to Embodiment 1 of the present invention;

[0039] Figure 5 This is a side view of the first pressed blank provided in Embodiment 1 of the present invention;

[0040] Figure 6 This is a flowchart of the method for combining the first billet and the second billet provided in Embodiment 1 of the present invention;

[0041] Figure 7 This is a flowchart of a method for providing a first billet and a second billet according to Embodiment 2 of the present invention;

[0042] Figure 8 This is a flowchart of a method for combining a first billet and a second billet according to Embodiment 2 of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1-Bottom; 2-Patterned area; 3-Raised area. Detailed Implementation

[0045] The present application is described below based on embodiments, but it is not limited to these embodiments. In the detailed description of the present application below, certain specific details are described in detail. Those skilled in the art can fully understand the present application without these details. To avoid obscuring the substance of the present application, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0046] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0047] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] For ease of explanation, spatially related terms such as “inside,” “outside,” “below,” “below,” “lower,” “above,” “upper,” etc., are used herein to describe the relationship between one element or feature illustrated in the figure and another. It will be understood that spatially related terms may be intended to encompass different orientations of the device in use or operation besides those depicted in the figure. For example, if the device in the figure is flipped, an element described as “below” or “below” another element or feature would then be positioned “above” that other element or feature. Thus, the exemplified term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein should be interpreted accordingly.

[0049] Unless the context explicitly requires it, words such as "including" or "contains" throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0050] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0051] Hydraulic pressing is currently the best process for mass-producing precious metal crafts, gifts, jewelry, and coin / bar products to showcase detailed craftsmanship. High-relief engraving has always been a challenging technique in hydraulic pressing. However, through continuous industry development and technological advancements, it is now possible to pre-fabricate the blank and then apply hydraulic pressure.

[0052] Figure 1 This is a top view of a metal craft provided in an embodiment of the present invention, which features a high-relief pattern. The bottom 1 and the patterned portion 2 are tightly joined, with the patterned portion 2 protruding from the bottom 1 in a direction away from it. The patterned portion 2 is a high-relief pattern, characterized by its relatively high degree of protrusion. The patterned portion 2 has a relatively three-dimensional structure with significant undulations, creating a strong sense of space and a striking visual effect. In this embodiment, the patterned portion 2 and the bottom 1 are made of the same material, such as copper, aluminum, or precious metals like gold, silver, or platinum.

[0053] Figure 2 This is a side view of a metal craft provided in an embodiment of the present invention. The thickness of the entire metal craft is h3, wherein the thickness of the bottom 1 is h2 and the thickness of the patterned part 2 is h1. In this embodiment, h3 is greater than 0.1 mm, and generally, h3 is 0.3 mm-0.8 mm. Due to the relatively thin overall thickness and the large protrusion height of the patterned part 2, it is generally necessary to first prefabricate a blank that conforms to the shape of the final product but does not have specific patterns before processing. However, the prefabrication process is relatively complex.

[0054] In a comparative example, the steps for processing a product with high relief using hydraulic pressing are as follows:

[0055] Step S1: Provide a blank with a thickness much greater than the thickness of the final product.

[0056] Step S2: Thin the blank according to the shape of the mold, leaving a larger thickness for the blank corresponding to the high relief position in the mold, and thinning the blank corresponding to the position that does not have a high relief position in the mold.

[0057] Step S3: Annealing.

[0058] Step S4: Repeat steps S2 and S3 multiple times until a blank with a thickness close to that of the finished product is formed.

[0059] Step S5: Hydraulically press the blank to a thickness close to that of the finished product.

[0060] In this comparative example, the steps can be divided into two parts: steps S1-S4 are for preforming the billet, and step S5 is for hydraulically pressing the billet. The preforming process requires multiple pressings to thin the billet and repeated annealing, making the process complex and time-consuming.

[0061] In another comparative example, the steps for processing a product with high relief using hydraulic pressure are as follows:

[0062] Step S1': Design a blank mold corresponding to the hydraulic mold.

[0063] Step S2': Cast the blank into the mold to obtain the blank.

[0064] Step S3': Hydraulic pressing of the blank.

[0065] In this comparative example, the process can also be divided into two parts: steps S1'-S2' are for precast blanks, and step S3' is for hydraulic blanks. The precast blanks require a separate mold, and the casting process involves melting and pouring the material, making the process cumbersome and reducing production efficiency. Furthermore, the surface of the cast blanks is relatively rough, requiring an additional grinding process, resulting in higher overall labor costs.

[0066] In view of this, embodiments of the present invention provide a metal processing method that simplifies the preform process and the hydraulic process, thereby improving production efficiency.

[0067] Figure 3 This is a flowchart of a metal processing method provided in an embodiment of the present invention. Figure 3 As shown, the metal processing method provided in this embodiment of the invention includes the following steps S100-S400:

[0068] Step S100: Provide a first blank having a first predetermined thickness and a second blank having a second predetermined thickness.

[0069] Step S200: Stack the second billet on the first billet to form a blank.

[0070] Step S300: Anneal the embryo.

[0071] Step S400: Place the annealed preform into the mold and apply pressure.

[0072] Example 1:

[0073] The purpose of step S100 is to provide a first billet and a second billet. Figure 4 This is a flowchart of a method for providing a first billet and a second billet according to Embodiment 1 of the present invention. Figure 4 As shown, in one embodiment of the present invention, step S100 specifically includes the following steps S110-S140:

[0074] Step S110: Roll the metal raw material to a first predetermined thickness and cut it to form a first billet.

[0075] The rolling process specifically involves progressively thicker metal rolling. That is, the relative distance between the upper and lower rolling rollers is adjusted as needed, and the metal raw material is rolled multiple times to achieve a first predetermined thickness. After each rolling, the relative distance between the upper and lower rolling rollers is gradually reduced, resulting in progressively thicker metal rolling. Progressively thicker metal rolling avoids deformation after rolling and ensures that the thickness of the first blank is uniform. The first predetermined thickness is greater than the bottom 1 and thickness h2 of the final metal craft item.

[0076] The cutting and rolling of metal involves steps such as using engraving dies, etching dies, precision roller dies, or QDC hardware dies for cutting. The shape of the die is determined by the shape of the bottom 1 of the final metal craft item.

[0077] In some embodiments, due to limitations in the size of the rolling mill, the metal raw material can be preliminarily cut after being rolled to a certain thickness, and then further rolled to a first predetermined thickness.

[0078] Step S120: Place the first blank into the mold and apply pressure.

[0079] Before placing the first blank into the mold, check the surface of the blank for impurities, then rinse and check the inside of the mold for other metals. After inspection, place the first blank horizontally into the mold at the position corresponding to the bottom 1.

[0080] Generally, a mold consists of a lower mold and an upper mold. The first blank is placed into the lower mold, and the hydraulic press is started to bring the lower mold closer to the upper mold. The pressure of the hydraulic press is 30 tons to 3500 tons. In this embodiment, a 200-ton hydraulic press can be used for a single hydraulic press. Those skilled in the art can also choose multiple hydraulic presses based on the characteristics of the mold and the effect after hydraulic pressing.

[0081] Step S130: Determine the second predetermined thickness of the second blank based on the thickness of the first blank after pressing and the inner wall dimensions of the mold.

[0082] Remove the first blank after pressing from the mold. Figure 5 This is a side view of the first blank after pressing, provided in Embodiment 1 of the present invention. Since the first predetermined thickness is greater than the thickness h2 of the bottom 1 of the final manufactured metal craft, the first blank after pressing includes a bottom 1 and a protrusion 3. The protrusion 3 is the portion of the pattern portion 2 near the bottom 1, and the thickness h4 of the protrusion 3 is less than the thickness h1 of the pattern portion 2. The worker can determine the second predetermined thickness of the second blank by using the dimensions of the position corresponding to the pattern portion 2 inside the mold and the thickness of the protrusion 3. In this embodiment, the sum of the second predetermined thickness of the second blank and the protrusion 3 is greater than or equal to the thickness of the pattern portion 2.

[0083] Step S140: Roll the metal raw material to a second predetermined thickness and cut it to form a second billet.

[0084] The specific process of rolling metal is gradual layer thickness rolling. That is, the relative distance between the upper and lower rolling rollers is adjusted as needed, and the metal raw material is rolled multiple times to achieve a second predetermined thickness. After each rolling, the relative distance between the upper and lower rolling rollers is gradually reduced, hence the term gradual layer thickness rolling. Gradual layer thickness rolling avoids deformation after rolling and ensures that the thickness of the second billet is uniform.

[0085] The cutting and rolling of the metal involves steps such as using engraving dies, etching dies, precision rotary dies, or QDC hardware dies for cutting. The shape of the die is determined by the shape of the final metal craft pattern section 2.

[0086] In some embodiments, due to limitations in the size of the rolling mill, the metal raw material can be pre-cut after being rolled to a certain thickness, and then further rolled to a second predetermined thickness.

[0087] The purpose of step S200 is to combine the first billet and the second billet. Figure 6 This is a flowchart of the method for combining the first billet and the second billet provided in Embodiment 1 of the present invention, as follows: Figure 6 As shown, in one embodiment of the present invention, step S200 specifically includes the following steps S210-S220:

[0088] Step S210: Determine the predetermined position of the first blank according to the surface pattern of the pressed first blank and the internal pattern of the mold.

[0089] like Figure 5 As shown, the predetermined position of the first blank is the position of the protrusion 3.

[0090] Step S220: The second blank is stacked at the predetermined position of the first blank to form a blank body.

[0091] Place the second blank on the protrusion 3. Ensure that the second blank coincides with the protrusion 3, that is, the projection of the second blank toward the direction of the first blank covers the protrusion 3.

[0092] Since the bottom part 1 and the patterned part 2 in the finished product are made of the same material, the first blank and the second blank are also made of the same material. Furthermore, the first blank and the second blank, being of the same material, can better and more tightly bond together during subsequent processing to form a complete structure. To facilitate processing and ensure the final product is easy to preserve, the first blank and the second blank are made of malleable metals, such as copper or aluminum. Further, to enhance the decorative appeal of the product, the first blank and the second blank are made of precious metals such as gold, silver, or platinum. The specific materials for the bottom part 1 and the patterned part 2 can be selected according to the actual needs of those skilled in the art, and are not limited here.

[0093] The annealing temperature of the billet in step S300 is determined by the materials of the first and second billets, and ranges from 600℃ to 900℃. When the first and second billets are gold, the annealing temperature in step S300 is 900℃. When the first and second billets are silver, the annealing temperature in step S300 is 600℃. The annealing time is between 10 seconds and 10 minutes. When using metals other than gold and silver, the annealing temperature and time are selected according to the type of metal used, and are not limited here. Annealing allows the first and second billets to bond better together, softens the rolled billets, improves plasticity and toughness, homogenizes their chemical composition, removes residual stress, and achieves the desired physical properties. It also prevents deformation of the billet in subsequent processes, which would affect product quality.

[0094] Step S400 aims to hydraulically press the first and second blanks. In the embodiment provided by this invention, step S400 specifically involves:

[0095] The embryo is placed in a hydraulic press for initial pressing.

[0096] Before placing the billet into the hydraulic press, it needs to be cleaned and dried to ensure the quality of the finished product. Specifically, nitrogen gas can be used to remove dust and other particulate impurities from the surface of the billet. Then, it should be thoroughly rinsed with ultrasonic waves. After drying, the billet is placed into the mold of the hydraulic press for pressing.

[0097] Before placing the blank into the hydraulic press, the mold needs to be inspected and its surface treated. According to the design, the mold surface is sandblasted and polished to achieve a glossy finish.

[0098] Generally, a mold consists of a lower mold and an upper mold. The blank is placed into the lower mold, and the hydraulic press is started to bring the lower mold closer to the upper mold. The pressure of the hydraulic press is 30 tons to 3500 tons. In this embodiment, a 200-ton hydraulic press can be used for a single hydraulic press.

[0099] Since the aforementioned steps in this embodiment provide a blank that matches the shape of each part of the mold, and the blank is softened by annealing, the relief of the metal crafts formed by hydraulic pressing is full, the details are clear, and the bright sand surface is evenly distributed.

[0100] In this embodiment, after obtaining the finished product, the burrs formed at the mold seams during the pressing process can be removed with a file, and the surface can be smoothed with sandpaper to make the outer edges of the metal crafts smooth and rounded.

[0101] Example 2:

[0102] The purpose of step S100 is to provide a first billet and a second billet. Figure 7 This is a flowchart of a method for providing a first billet and a second billet according to Embodiment 2 of the present invention. Figure 7 As shown, in Embodiment 2 provided by the present invention, step S100 specifically includes the following steps S101-S103:

[0103] Step S101: Determine the first predetermined thickness of the first blank and the second predetermined thickness of the second blank based on the height of the inner wall of the mold.

[0104] The worker obtains the first predetermined thickness of the first blank based on the area corresponding to the bottom 1 on the inner wall of the mold. The first predetermined thickness is greater than or equal to the thickness h2 of the bottom 1.

[0105] The worker obtains the second predetermined thickness of the second blank based on the area corresponding to the pattern part 2 on the inner wall of the mold. The second predetermined thickness is greater than or equal to the thickness h1 of the pattern part 2.

[0106] Step S102: Roll the metal raw material to a first predetermined thickness and cut it to form a first billet.

[0107] The rolling process specifically involves progressively thicker metal rolling. That is, the relative distance between the upper and lower rolling rollers is adjusted as needed, and the metal raw material is rolled multiple times to achieve a first predetermined thickness. After each rolling, the relative distance between the upper and lower rolling rollers is gradually reduced, resulting in progressively thicker metal rolling. Progressively thicker metal rolling avoids deformation after rolling and ensures that the thickness of the first blank is uniform. The first predetermined thickness is greater than the bottom 1 and thickness h2 of the final metal craft item.

[0108] The cutting and rolling of metal involves steps such as using engraving dies, etching dies, precision roller dies, or QDC hardware dies for cutting. The shape of the die is determined by the shape of the bottom 1 of the final metal craft item.

[0109] Step S103: Roll the metal raw material to a second predetermined thickness and cut it to form a second billet.

[0110] The metal rolling process specifically involves progressively thicker layer rolling. That is, the relative distance between the upper and lower rolling rollers is adjusted as needed, and the metal raw material is rolled multiple times to achieve a second predetermined thickness. After each rolling cycle, the relative distance between the upper and lower rolling rollers is gradually reduced, resulting in progressively thicker layer rolling. Progressively thicker layer rolling avoids deformation after rolling and ensures a uniform thickness of the second blank material. The second predetermined thickness is greater than the thickness h1 of the final metal craft pattern section 2.

[0111] The cutting and rolling of the metal involves steps such as using engraving dies, etching dies, precision rotary dies, or QDC hardware dies for cutting. The shape of the die is determined by the shape of the pattern section 2 of the final metal craft.

[0112] The purpose of step S200 is to provide a first billet and a second billet. Figure 8This is a flowchart of the method for combining the first billet and the second billet provided in Embodiment 2 of the present invention, as follows: Figure 8 As shown, in Embodiment 2 provided by the present invention, step S200 specifically includes the following steps S201-S202:

[0113] Step S201: Determine the predetermined position of the first blank according to the position of the pattern on the inner wall of the mold.

[0114] The worker determines the predetermined position of the first blank based on the positions of the inner walls of the mold corresponding to the bottom 1 and the patterned part 2. The predetermined position is the connection point between the bottom 1 and the patterned part 2.

[0115] Step S202: Stack the second blank at the predetermined position of the first blank to form a blank body.

[0116] Place the second billet in the predetermined position. Ensure that the second billet coincides with the predetermined position, that is, the projection of the second billet toward the first billet coincides with the predetermined position.

[0117] Since the bottom part 1 and the patterned part 2 in the finished product are made of the same material, the first blank and the second blank are also made of the same material. Furthermore, the first blank and the second blank, being of the same material, can better and more tightly bond together during subsequent processing to form a complete structure. To facilitate processing and ensure the final product is easy to preserve, the first blank and the second blank are made of malleable metals, such as copper or aluminum. Further, to enhance the decorative appeal of the product, the first blank and the second blank are made of precious metals such as gold, silver, or platinum. The specific materials for the bottom part 1 and the patterned part 2 can be selected according to the actual needs of those skilled in the art, and are not limited here.

[0118] The annealing temperature of the billet in step S300 is determined by the materials of the first and second billets, and ranges from 600℃ to 900℃. When the first and second billets are gold, the annealing temperature in step S300 is 900℃. When the first and second billets are silver, the annealing temperature in step S300 is 600℃. The annealing time is between 10 seconds and 10 minutes. When using metals other than gold and silver, the annealing temperature and time are selected according to the type of metal used, and are not limited here. Annealing allows the first and second billets to bond better together, softens the rolled billets, improves plasticity and toughness, homogenizes their chemical composition, removes residual stress, and achieves the desired physical properties. It also prevents deformation of the billet in subsequent processes, which would affect product quality.

[0119] Step S400 aims to hydraulically press the first and second blanks. In the embodiments provided by this invention, step S400 specifically includes:

[0120] The embryo is placed in a hydraulic press for initial pressing.

[0121] Before placing the billet into the hydraulic press, it needs to be cleaned and dried to ensure the quality of the finished product. Specifically, nitrogen gas can be used to remove dust and other particulate impurities from the surface of the billet. Then, it should be thoroughly rinsed with ultrasonic waves. After drying, the billet is placed into the mold of the hydraulic press for pressing.

[0122] Before placing the blank into the hydraulic press, the mold needs to be inspected and its surface treated. According to the design, the mold surface is sandblasted and polished to achieve a glossy finish.

[0123] Generally, a mold consists of a lower mold and an upper mold. The blank is placed into the lower mold, and the hydraulic press is started to bring the lower mold closer to the upper mold. The pressure of the hydraulic press is 30 tons to 3500 tons. In this embodiment, a 200-ton hydraulic press can be used for a single hydraulic press.

[0124] Because the aforementioned steps in this embodiment provide a blank that matches the shape of each part of the mold, and the blank is softened by annealing, the metal crafts formed after hydraulic pressing have full relief, clear details, and a uniformly distributed glossy surface.

[0125] In this embodiment, after obtaining the finished product, the burrs formed at the mold seams during the pressing process can be removed with a file, and the surface can be smoothed with sandpaper to make the outer edges of the metal crafts smooth and rounded.

[0126] This invention discloses a metal processing method. By modifying the processing method of the pre-form stage using existing technology and employing an integrated pressing and stamping composite process, the processing difficulties of high-relief products are perfectly solved. This eliminates the need for multiple heavy-duty rough pressing processes and post-processing steps in the casting stage, simplifying the processing steps, reducing labor and material costs, and resulting in more delicate and refined product details. It can be applied to the processing of jewelry and commemorative coins made of common metals such as copper and aluminum, or precious metals such as gold, silver, and platinum.

[0127] The processing method includes providing a first blank and a second blank of the same material, stacking the second blank on the first blank to form a blank body, annealing the blank body, and placing the annealed blank body into a mold and applying hydraulic pressure. This invention provides a relatively simple and efficient metal processing method through the above steps, enabling the processing of metal crafts with high relief using only a few steps.

[0128] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for processing metal handicrafts, characterized in that, The metal craft processing method includes: A first blank having a first predetermined thickness and a second blank having a second predetermined thickness are provided; The second blank is stacked on the first blank to form a blank body; The blank is annealed. The annealed blank is placed into a mold and pressure is applied. The first blank and the second blank are made of the same material; The provision of a first blank having a first predetermined thickness and a second blank having a second predetermined thickness includes a first configuration or a second configuration. The first configuration method includes: The metal raw material is rolled to a first predetermined thickness and then cut to form a first billet; The first blank is placed into the mold and pressure is applied; The second predetermined thickness of the second blank is determined based on the thickness of the first blank after pressing and the inner wall dimensions of the mold. The metal raw material is rolled to a second predetermined thickness and then cut to form a second billet; The second configuration method includes: The first predetermined thickness of the first blank and the second predetermined thickness of the second blank are determined based on the height of the inner wall of the mold; The metal raw material is rolled to a first predetermined thickness and then cut to form a first billet; The metal raw material is rolled to a second predetermined thickness and then cut to form a second billet; Wherein, the sum of the first predetermined thickness and the second predetermined thickness is greater than the total thickness.

2. The metal craft processing method according to claim 1, characterized in that, The step of stacking the second blank on the first blank to form a blank body includes: The predetermined position of the first blank is determined based on the surface pattern of the first blank after pressing according to the first configuration method and the internal pattern of the mold; The second blank in the first configuration is stacked at the predetermined position of the first blank to form a blank body.

3. The metal craft processing method according to claim 1, characterized in that, The step of stacking the second blank on the first blank to form a blank body includes: The predetermined position of the first blank in the second configuration is determined according to the position of the pattern on the inner wall of the mold; The second blank in the second configuration is stacked at the predetermined position of the first blank to form a blank body.

4. The metal craft processing method according to claim 1, characterized in that, The annealing temperature of the blank is 600℃-900℃.

5. The metal craft processing method according to claim 1, characterized in that, The step of placing the annealed blank into the mold and applying pressure includes: The blank is placed into a hydraulic press for pressing.

6. The metal craft processing method according to claim 5, characterized in that, The pressure of the hydraulic press is 30 tons to 3500 tons.

7. The metal craft processing method according to claim 1, characterized in that, The first and second blanks are made of precious metals.

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