Machining method for efficient ferrite control of end socket

Abstract

The invention discloses a machining method for efficient ferrite control of an end socket, and relates to the technical field of end socket ferrite machining.The machining method comprises the steps of blanking, coating manufacturing, first-time pre-forming stamping, pre-pickling, solid solution heat treatment, secondary stamping, allowance removal, port size adjustment and the like, the end socket is finally formed, meanwhile, the ferrite content in the end socket is lower than 12%, and the end socket is manufactured. According to the machining method for efficient ferrite control over the end socket, first-time pre-forming stamping is carried out on a material sheet, the stamping depth is smaller than that of a finished product, then solid solution heat treatment is carried out, a single austenite structure is obtained, the plasticity and toughness are improved, second-time stamping is carried out, and the stamping depth is consistent with the depth of the finished product; and meanwhile, the effect of correcting deformation generated by the end socket in solution heat treatment is achieved, finally, redundant allowance at the end of the end socket is removed, the size of the end of the end socket is adjusted, and the method has the beneficial effects that the ferrite content in the end socket is effectively controlled, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ferrite processing of end caps, and in particular to a processing method for efficiently controlling ferrite of end caps. Background Art

[0002] The end cap is a component used to seal the end of a container to isolate the media inside and outside. The end cap of a cylindrical container is generally a rotating shell.

[0003] The national standard GB25198 for end caps requires that the ferrite content of austenitic stainless steel should be ≤15%. The current assessment requires a stricter control of the ferrite content, requiring that the ferrite content should be ≤12%.

[0004] At present, it is difficult to produce products with this requirement using the existing warm forming process. It is very likely that the ferrite exceeds the standard and cannot meet the use standard. At the same time, the production period is very long and the production efficiency is low.

[0005] Therefore, it is necessary to design a high-efficiency ferrite control processing method for the head to control the ferrite content in the head and improve production efficiency. Summary of the invention

[0006] The object of the present invention is to provide a processing method for efficiently controlling ferrite of a head, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a processing method for high-efficiency ferrite control of a head, comprising the following steps:

[0008] S30: The first pre-forming stamping uses a stamping machine and a die head composed of a corresponding mold and a film to stamp the sheet to initially form a head. The stamping depth accounts for 95% of the finished product depth.

[0009] S40: pre-pickling, applying pickling liquid to the surface of the head to remove oil stains and impurities on the surface of the head;

[0010] S50: Solution heat treatment, which is to perform solution heat treatment on the head after the first pre-forming and stamping;

[0011] S60: Secondary stamping, the stamping depth is deepened to the finished product depth to correct the local deformation of the head after solution heat treatment;

[0012] S70: removing the excess, processing and removing the excess excess of the head groove after the secondary stamping is completed;

[0013] S80: Adjust the port size. Process the port size of the head and adjust it to the required size.

[0014] According to the above technical solution, the stamping depth of the first pre-forming stamping in step S30 is specifically 600±10 mm, and the stamping depth of the second stamping in step S60 is specifically 630±10 mm.

[0015] According to the above technical solution, in step S50, multiple groups of heads formed by the first pre-forming and stamping are placed in a solid melting furnace, and after the head temperature is heated to 1050 degrees Celsius, they are moved into a water pool and cooled to room temperature.

[0016] According to the above technical solution, the processing method for removing the excess in step S70 is plasma beveling.

[0017] According to the above technical solution, the processing method for controlling the size of the head port in step S80 is spinning.

[0018] According to the above technical solution, before step S30, the following steps are also included:

[0019] S10: Cutting the plate to form a disc-shaped sheet;

[0020] S20: Encapsulation is used as an upper die for stamping the blank.

[0021] According to the above technical solution, the diameter of the disc-shaped sheet formed after cutting is 3034 mm.

[0022] According to the above technical solution, in step S20, the envelope is first punched by an existing punching die, and then the accuracy of the envelope spherical surface is controlled within the millimeter level by numerical control machining.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, through the steps of blanking, coating production, first pre-forming stamping, pre-pickling, solution heat treatment, secondary stamping, removing excess and adjusting port size, makes the head finally formed, and at the same time controls the ferrite content in the head to be less than 12%.

[0024] Through solution heat treatment, a single austenite structure is obtained to improve plasticity and toughness.

[0025] The secondary stamping can correct the deformation of the head produced during the solution heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a flow chart of a processing method for high-efficiency ferrite control of a head according to the present invention; DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1 The present invention provides a technical solution: a processing method for high-efficiency ferrite control of a head, comprising the following steps:

[0030] S10: Cutting: precise cutting is achieved through laser, and the cutting size is controlled, specifically a disc-shaped piece with a diameter of 3034mm.

[0031] S20: Envelope production, used as the upper die for stamping the sheet, is first produced by an existing stamping die, and then the spherical surface of the envelope is CNC machined to control the accuracy deviation of the spherical surface within the millimeter level.

[0032] S30: The first pre-forming punching is performed on the sheet through a die head composed of a mold and a film. The specific punching depth is controlled at 600±10mm to ensure that the head has good strength and rigidity.

[0033] S40: Pre-pickling, used to remove oil and impurities on the surface of the head.

[0034] S50: Solution heat treatment, which is to perform solution heat treatment on the head after the first pre-forming and stamping;

[0035] S60: Secondary stamping, the stamping depth is deepened to 630±10mm to correct the deformation of the head under high temperature conditions, while controlling and reducing the subsequent spinning production volume. The less the spinning production volume, the better the quality.

[0036] S70: Remove excess. Remove excess excess from the end cap port by plasma beveling. This process requires adjusting the overall state of the end cap to prevent excessive eccentricity.

[0037] S80: Adjust the port size. The port size of the head is adjusted by spinning to meet the requirements of the head shape and size.

[0038] In this embodiment, after the size is determined by laser, the corresponding envelope is produced, and the sheet is pre-formed and stamped for the first time through the corresponding mold. After that, the heads after multiple groups of stamping are subjected to solution heat treatment. After the solution heat treatment, the second stamping is performed to correct the deformation of the head formed during the solution heat treatment. After that, the excess margin of the head port is removed by plasma rupture, and the size of the sealing port is controlled by spin forming to meet the manufacturing requirements.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A processing method for efficient ferrite control of a head, comprising the following steps: S30: The first pre-forming stamping uses a stamping machine and a die head composed of a corresponding mold and a film to stamp the sheet to initially form a head. The stamping depth accounts for 95% of the finished product depth. S40: pre-pickling, applying pickling liquid to the surface of the head to remove oil stains and impurities on the surface of the head; S50: Solution heat treatment, which is to perform solution heat treatment on the head after the first pre-forming and stamping; S60: Secondary stamping, the stamping depth is deepened to the finished product depth to correct the local deformation of the head after solution heat treatment; S70: removing the excess, processing and removing the excess excess of the head groove after the secondary stamping is completed; S80: Adjust the port size. Process the port size of the head and adjust it to the required size.

2. A processing method for high-efficiency ferrite control of a head according to claim 1, characterized in that: The punching depth of the first pre-forming punching in the step S30 is specifically 600±10 mm, and the punching depth of the second punching in the step S60 is specifically 630±10 mm.

3. The method for processing a head with high efficiency ferrite control according to claim 1 is characterized in that: In the step S50, multiple groups of heads formed by the first pre-forming and stamping are placed in a solid melting furnace, and after the head temperature is heated to 1050 degrees Celsius, the heads are moved into a water pool and cooled to room temperature.

4. The method for processing a head with high efficiency ferrite control according to claim 1 is characterized in that: The processing method for removing the excess in step S70 is plasma groove.

5. The method for processing a head with high efficiency ferrite control according to claim 1 is characterized in that: In step S80, the processing method for controlling the size of the head port is spinning.

6. The method for processing a head with high efficiency ferrite control according to claim 1 is characterized in that: Before step S30, the method further includes the following steps: S10: Cutting the plate to form a disc-shaped sheet; S20: Encapsulation is used as an upper die for stamping the blank.

7. A processing method for high-efficiency ferrite control of a head according to claim 6, characterized in that: The diameter of the disc-shaped sheet after cutting is 3034 mm.

8. The method for processing a head with high efficiency ferrite control according to claim 6 is characterized in that: The material cutting process in step S10 is laser cutting.

9. The method for processing a head with high efficiency ferrite control according to claim 6, characterized in that: In the step S20, the envelope is first punched by an existing punching die, and then the accuracy of the envelope spherical surface is controlled within the millimeter level by numerical control machining.

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