Process method for rolling titanium alloy cone plate by adopting four-roller rolled plate

Abstract

The invention discloses a process method for rolling a titanium alloy cone plate by adopting a four-roller rolled plate. The process method comprises the following steps: carrying out surface cleaning and preheating treatment on a selected titanium alloy plate; heating the titanium alloy plate to 800 DEG C, taking out the titanium alloy plate from the heating equipment, and quickly conveying the titanium alloy plate to a position above a lower roller of the four-roller plate bending machine; according to the taper and size requirements of the cone plate, an upper roller and a lower roller of the plate rolling machine are accurately adjusted, the inclination amount of side rollers and the displacement amount of each roller are determined through a roller adjusting model, and the aluminum alloy plate is machined into the corresponding aluminum alloy cone plate; through calculation and accurate control of parameters of each roller of the plate rolling machine and adoption of an advanced cone rolling tool, the forming precision of the titanium alloy cone plate can be improved, and the subsequent machining amount is remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy processing, and in particular to a process method for rolling a titanium alloy cone plate by using four-roller rolling. Background Art

[0002] Titanium alloys have been widely used in many important fields such as aerospace, shipbuilding, and chemical industry due to their many excellent properties, such as high strength, low density, good corrosion resistance, and high temperature performance. As an indispensable structural component, the forming process of titanium alloy cone plates has always been the core point of research. Studies have shown that the yield strength and elongation of titanium alloys will change dramatically with changes in temperature. However, the traditional titanium alloy cone plate manufacturing process has obvious limitations when facing this type of special titanium alloy plate that changes with temperature. It is impossible to achieve rolling operations, and it also exposes problems such as poor forming accuracy and low material utilization. The traditional process has a large deviation in forming accuracy, a high material waste rate, and even most of it cannot be formed, which undoubtedly greatly increases production costs and reduces production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a process for rolling a titanium alloy cone plate by using a four-roller rolling machine.

[0004] According to one aspect of the present disclosure, the following technical solution is provided: a process for rolling a titanium alloy cone plate using four-roller rolling, comprising the following steps:

[0005] Carry out surface cleaning and preheating treatment on the selected titanium alloy plates;

[0006] Then, the titanium alloy plate is heated to 800°C, taken out from the heating device, and quickly transferred to the top of the lower roller of the four-roller plate rolling machine;

[0007] According to the taper and size requirements of the cone plate, the upper and lower rollers of the plate rolling machine are precisely adjusted. The inclination of the side rollers and the displacement of each roller are determined by the roller adjustment model, and the aluminum alloy plate is processed into the corresponding aluminum alloy cone plate.

[0008] According to at least one embodiment of the present disclosure, in the process of rolling a titanium alloy cone plate using four-roller rolling, the algorithm of the roll adjustment model is as follows:

[0009] A=sin(ω-γ)*(Da+Dc) / 2sinγ;

[0010] MN=A2+[(Da+Dc) / 2]2-A*(Da+Dc)cos[(180-60) / 180]*π;

[0011] y1=(r'+2*d+Dc)*SIN[3.14159*(180-γ-φ) / 180] / 2 / SIN(3.14159*γ / 180)-MN;

[0012] y2=(R'+2*d+Dc)*SIN[3.14159*(180-γ-φ) / 180] / 2 / SIN(3.14159*γ / 180)-MN;

[0013] z1=d+3;

[0014] z2=d-1;

[0015] Wherein, y1 is the displacement of the small end of the cone side roller, y2 is the displacement of the large end of the cone side roller, z1 is the displacement of the small end of the lower roller, z2 is the displacement of the large end of the lower roller, Da is the diameter of the upper roller, Db is the diameter of the lower roller, Dc is the diameter of the side roller, D is the plate thickness, R' is the radius before the forming spring of the large end of the workpiece, and r' is the radius before the forming spring of the small end of the workpiece.

[0016] According to at least one embodiment of the present disclosure, in the process method for rolling titanium alloy cone plates using four-roll rolling, the position adjustment formula of the lower roller is: \(h=R\cdot\theta\), where \(h\) is the displacement of the lower roller, \(R\) is the target bending radius, and \(\theta\) is the bending angle.

[0017] According to at least one embodiment of the present disclosure, in a process for rolling a titanium alloy cone plate using a four-roller plate rolling machine, the aluminum alloy plate is placed above a lower roll of the four-roller plate rolling machine and aligned by laser.

[0018] According to at least one embodiment of the present disclosure, in the process method for rolling titanium alloy cone plates using four-roll rolling, the side rollers need to be tilted at a certain angle according to the taper requirements so that the two ends of the plate are fed at different speeds. The tilt angle formula is: \(\alpha=\arctan\left(\frac{D_1-D_2}{2L}\right)\), where \(D_1\) and \(D_2\) are the diameters of the large and small ends of the cone plate, respectively, and \(L\) is the length of the plate.

[0019] According to at least one embodiment of the present disclosure, in the process of rolling a titanium alloy cone plate using four-roll rolling, the aluminum alloy plate is rolled into the aluminum alloy cone plate and then subjected to the processing steps of campus, welding and heat treatment.

[0020] Technical effects and advantages of the present invention:

[0021] Improve forming accuracy: By calculating and precisely controlling the parameters of each roller of the plate rolling machine and adopting advanced cone rolling tooling, the forming accuracy of the titanium alloy cone plate can be improved, the amount of subsequent processing can be significantly reduced, and no wasted plates are generated, thereby reducing production costs.

[0022] Improve production efficiency: The four-roller plate rolling machine that calculates the side roller displacement and forms according to the designed process has obvious advantages in rolling efficiency. This process can effectively shorten the production cycle and increase the output per unit time, thereby meeting the market's demand for efficient products.

[0023] Improve material utilization: By optimizing the rolling process and tooling design, after actual production verification, it can significantly reduce material waste, improve material utilization, achieve effective use of resources, and reduce the production cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0025] Figure 1 The present invention discloses a rolling diagram of a titanium alloy cone plate using four-roller rolling. DETAILED DESCRIPTION

[0026] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "below," "above," "on," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "below" or "beneath" other components or features would then be positioned "above" the other components or features. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0027] The present invention discloses a process for rolling a titanium alloy cone plate using four-roller rolling, comprising the following steps:

[0028] Carry out surface cleaning and preheating treatment on the selected titanium alloy plates;

[0029] Then, the titanium alloy plate is heated to 800°C, taken out from the heating device, and quickly transferred to the top of the lower roller of the four-roller plate rolling machine;

[0030] According to the taper and size requirements of the cone plate, the upper and lower rollers of the plate rolling machine are precisely adjusted. The inclination of the side rollers and the displacement of each roller are determined by the roller adjustment model, and the aluminum alloy plate is processed into the corresponding aluminum alloy cone plate.

[0031] In this embodiment, the algorithm of the roller adjustment model is as follows:

[0032] A=sin(ω-γ)*(Da+Dc) / 2s i nγ;

[0033] MN=A2+[(Da+Dc) / 2]2-A*(Da+Dc)cos[(180-60) / 180]*π;

[0034] y1=(r'+2*d+Dc)*SI N[3.14159*(180-γ-φ) / 180] / 2 / SIN(3.14159*γ / 180)-MN;

[0035] y2=(R'+2*d+Dc)*SI N[3.14159*(180-γ-φ) / 180] / 2 / SIN(3.14159*γ / 180)-MN;

[0036] z1=d+3;

[0037] z2=d-1;

[0038] Wherein, y1 is the displacement of the small end of the cone side roller, y2 is the displacement of the large end of the cone side roller, z1 is the displacement of the small end of the lower roller, z2 is the displacement of the large end of the lower roller, Da is the diameter of the upper roller, Db is the diameter of the lower roller, Dc is the diameter of the side roller, D is the plate thickness, R' is the radius before the forming spring of the large end of the workpiece, and r' is the radius before the forming spring of the small end of the workpiece.

[0039] In this embodiment, the position adjustment formula of the lower roller is: \(h=R\cdot\theta\), where \(h\) is the displacement of the lower roller, \(R\) is the target bending radius, and \(\theta\) is the bending angle.

[0040] During the rolling process, the speed and pressure of each roller are precisely controlled to ensure uniform deformation of the sheet, thereby achieving good forming quality, and each rolling operation gradually approaches the target state.

[0041] In this embodiment, the aluminum alloy plate is placed above the lower roller of a four-roller plate rolling machine and aligned by laser.

[0042] In this embodiment, the side roller needs to be tilted at a certain angle according to the taper requirements so that the two ends of the plate can be fed at different speeds. The tilt angle formula is: \(\al pha=\arctan\l eft(\frac{D_1-D_2}{2L}\r ight)\), where \(D_1\) and \(D_2\) are the diameters of the large and small ends of the cone plate, respectively, and \(L\) is the length of the plate.

[0043] In this embodiment, the aluminum alloy sheet is rolled into an aluminum alloy cone plate and then subjected to campus, welding and heat treatment processing steps, aiming to effectively eliminate residual stress and ensure that the dimensional accuracy and mechanical properties of the cone plate meet relevant standards and design requirements.

[0044] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A process for rolling a titanium alloy cone plate using four-roller rolling, characterized in that: The following steps are involved: Carry out surface cleaning and preheating treatment on the selected titanium alloy plates; Then, the titanium alloy plate is heated to 800°C, taken out from the heating device, and quickly transferred to the top of the lower roller of the four-roller plate rolling machine; According to the taper and size requirements of the cone plate, the upper and lower rollers of the plate rolling machine are precisely adjusted. The inclination of the side rollers and the displacement of each roller are determined by the roller adjustment model, and the aluminum alloy plate is processed into the corresponding aluminum alloy cone plate.

2. The process for rolling a titanium alloy cone plate using four-roller rolling according to claim 1 is characterized in that: The algorithm of the roller adjustment model is as follows: A=sin(ω-γ)*(Da+Dc) / 2sinγ; MN=A2+[(Da+Dc) / 2]2-A*(Da+Dc)cos[(180-60) / 180]*π; y1=(r'+2*d+Dc)*SIN[3.14159*(180-γ-φ) / 180] / 2 / SIN(3.14159*γ / 180)-MN; y2=(R'+2*d+Dc)*SIN[3.14159*(180-γ-φ) / 180] / 2 / SIN(3.14159*γ / 180)-MN; z1=d+3; z2=d-1; Wherein, y1 is the displacement of the small end of the cone side roller, y2 is the displacement of the large end of the cone side roller, z1 is the displacement of the small end of the lower roller, z2 is the displacement of the large end of the lower roller, Da is the diameter of the upper roller, Db is the diameter of the lower roller, Dc is the diameter of the side roller, D is the plate thickness, R' is the radius before the forming spring of the large end of the workpiece, and r' is the radius before the forming spring of the small end of the workpiece.

3. The process for rolling a titanium alloy cone plate using four-roller rolling according to claim 2 is characterized in that: The position adjustment formula of the lower roller is: \(h=R\cdot\theta\), where \(h\) is the displacement of the lower roller, \(R\) is the target bending radius, and \(\theta\) is the bending angle.

4. The process for rolling a titanium alloy cone plate using four-roller rolling according to claim 3 is characterized in that: The aluminum alloy plate is placed above the lower roller of a four-roller plate rolling machine and is aligned by laser.

5. The process for rolling a titanium alloy cone plate using four-roller rolling according to claim 4 is characterized in that: The side roller needs to be tilted at a certain angle according to the taper requirements so that the two ends of the plate can be fed at different speeds. The tilt angle formula is: \(\alpha=\arctan\left(\frac{D_1-D_2}{2L}\right)\), where \(D_1\) and \(D_2\) are the diameters of the large and small ends of the cone plate, respectively, and \(L\) is the length of the plate.

6. The process for rolling a titanium alloy cone plate using four-roller rolling according to claim 1 is characterized in that: The aluminum alloy sheet is rolled into an aluminum alloy cone plate and then subjected to campus, welding and heat treatment processing steps.

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