An anodized titanium frame hanger

Abstract

The utility model relates to an anodic oxidation titanium frame hanger, including hanger body, workpiece hanging position is located on hanger body and sets up multiple groups, workpiece hanging position is provided with the support surface for supporting the workpiece to be oxidized, the electrically conductive hook is hung in the electrically conductive row, and is used for implementing the electrification to hanger body, is provided with the electrically conductive tungsten head on workpiece hanging position, electrically conductive tungsten head is electrically connected with hanger body, and multiple groups are set up with electrically conductive tungsten head interval, and multiple groups electrically conductive tungsten head protrude the support surface of workpiece hanging position and are electrically connected with workpiece, and electrically conductive tungsten head excellent conductivity can significantly reduce the contact resistance and body resistance of workpiece hanging position after electrically connected with pure titanium hanger body, reduce the joule heat loss in the electrification process, avoid the ablation of workpiece and hanger contact point because of local overheating. Electrically conductive tungsten head protrude the support surface and form reliable electric contact with workpiece, ensure that the current is transmitted from the hanger to the workpiece, improve the workpiece surface effective current density stability, accelerate the oxidation film growth rate, improve the anodic oxidation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of anodized hanging fixture technology, and in particular to anodized titanium frame hanging fixture. Background Technology

[0002] In the field of surface treatment of light metal workpieces such as aluminum alloys and magnesium alloys, anodizing is a core technology for improving the corrosion resistance, wear resistance, and decorative appearance of workpieces. Its technological maturity and application prevalence are among the highest in the industry. The core implementation logic of this process is as follows: the workpiece to be treated is mounted as an anode on a special fixture. The fixture carries the workpiece and introduces it into a pre-mixed electrolyte solution of specific components (such as sulfuric acid, oxalic acid, or chromic acid solutions). Then, a conductive circuit is formed between the fixture and an external DC power supply, allowing an electric field to act on the workpiece surface, triggering a redox reaction. Ultimately, a tightly bonded, dense, and stable oxide film is generated on the workpiece surface.

[0003] In long-term industrial practice, pure titanium has become the mainstream material for anodizing racks because it easily forms a dense and stable titanium oxide passivation film on its surface, which can effectively resist the corrosion of various acidic and alkaline electrolyte solutions, significantly reducing the corrosion loss of racks and extending their service life. However, pure titanium has a significant drawback in its inherent physical properties—its room temperature conductivity is only about 3.77 × 10⁻⁶. 6 The S / m ratio of pure titanium is far lower than that of conventional conductive materials such as copper and aluminum. This defect directly leads to two problems: First, the contact area between the pure titanium fixture and the workpiece is prone to localized Joule heat concentration due to excessive contact resistance, causing a sharp rise in contact temperature and leading to ablation. This not only damages the fixture and the workpiece but may also disrupt the stability of the conductive circuit due to poor contact. Second, the low conductivity increases the overall electrical loss of the fixture, reduces the effective current density transferred to the workpiece surface, directly slows down the oxide film growth rate, prolongs the single process time, and significantly reduces the oxidation processing efficiency of the workpiece. These problems have become key bottlenecks restricting the improvement of the quality and efficiency of the anodizing process, and there is an urgent need to optimize and improve the structure or material properties of pure titanium fixtures. Utility Model Content

[0004] The purpose of this utility model is to provide an anodized titanium rack fixture, which aims to solve the problems of ablation and low growth rate of oxide film when the above-mentioned fixture comes into contact with the workpiece, so as to ensure the anodizing efficiency of the workpiece and the anodizing quality of the workpiece.

[0005] The technical solution adopted in this utility model is as follows: An anodized titanium frame hanger, comprising: The body of the hanging device; Multiple workpiece hanging positions are provided on the main body of the fixture, and each workpiece hanging position is provided with a support surface for supporting the workpiece to be oxidized. A conductive hook is hung on a conductive busbar and is used to energize the main body of the hanger. The workpiece mounting position is provided with a conductive tungsten head, which is electrically connected to the mounting body. Multiple sets of conductive tungsten heads are arranged at intervals, and the multiple sets of conductive tungsten heads protrude from the support surface of the workpiece mounting position and are in electrical contact with the workpiece.

[0006] This utility model also has the following technical features: In one embodiment of this utility model, the end faces of multiple sets of conductive tungsten tips constitute a support surface for supporting the workpiece to be oxidized.

[0007] In one embodiment of this utility model, the conductive tungsten head is welded to the workpiece mounting position.

[0008] In one embodiment of this utility model, the workpiece hanging position is provided with a fixing position, and the conductive tungsten head is electrically connected to the fixing position.

[0009] In one embodiment of this utility model, the conductive tungsten head is generally rod-shaped with one end larger than the other, and the smaller end of the conductive tungsten head is in electrical contact with the surface of the workpiece to be oxidized.

[0010] In one embodiment of this utility model, the multiple sets of conductive tungsten heads make contact with the surface of the workpiece to be oxidized in one or more ways, such as lines, points, or surfaces.

[0011] In one embodiment of this utility model, the conductive tungsten head includes a fixing sleeve and a contact body. The fixing sleeve is fixed on the workpiece hanging position, and the contact body is inserted into the fixing sleeve. One end of the contact body extending out of the fixing sleeve makes electrical contact with the surface of the workpiece to be oxidized.

[0012] In one embodiment of this utility model, the contact body is rod-shaped, the fixing sleeve is tubular, and a spring is sleeved on the contact body, with the two ends of the spring abutting against the tubular end of the fixing sleeve and the contact body, respectively.

[0013] In one embodiment of this utility model, the cavity of the fixed sleeve is provided with an internal thread section, the outer wall of the contact body is provided with an external thread section, and the contact body and the fixed sleeve form a threaded connection.

[0014] In one embodiment of this utility model, the tube body of the fixed sleeve is rotatably mounted on the workpiece hanging position via a hinge shaft, and the angle between the hinge shaft and the workpiece hanging position is adjustable.

[0015] Compared with existing technologies, the beneficial effects of this invention are as follows: The conductive tungsten tip has excellent conductivity, and after being electrically connected to the pure titanium fixture body, it can significantly reduce the contact resistance and volume resistance of the workpiece mounting position, reduce Joule heat loss during the energizing process, avoid ablation at the contact point between the workpiece and the fixture due to local overheating, and extend the service life of the fixture and the workpiece. Multiple sets of spaced conductive tungsten tips protrude from the support surface to form reliable electrical contact with the workpiece, ensuring efficient and uniform current transfer from the fixture to the workpiece, improving the stability of the effective current density on the workpiece surface, accelerating the oxide film growth rate, and increasing anodizing efficiency. The conductive tungsten tip also has good corrosion resistance, retaining the corrosion resistance advantage of the pure titanium fixture body while solving its low conductivity bottleneck, ensuring consistent workpiece oxidation quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of anodized titanium frame hanger in one embodiment of the present invention; Figure 2 This is a plan view of an anodized titanium frame hanger in one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the conductive tungsten head and the workpiece mounting position in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the conductive tungsten head in one embodiment of the present invention, which is engaged with the workpiece by means of a first bracket and a second bracket; Figure 5 This is a planar schematic diagram of the engagement of the conductive tungsten head and the fixed position in one embodiment of the present invention; Figure 6 This is a planar schematic diagram of the conductive tungsten head and the fixed position in another embodiment of the present invention; Figure 7 This is a planar schematic diagram of the conductive tungsten head and the fixed position in another embodiment of the present invention; Figure 8 This is a plan view of the conductive tungsten head in one embodiment of the present invention; Figure 9 This is a plan view of the conductive tungsten head in another embodiment of the present invention; Figure 10 This is a cross-sectional schematic diagram of the conductive tungsten head in one embodiment of the present invention; Figure 11 This is a cross-sectional schematic diagram of the two sets of conductive tungsten heads mating with the workpiece in one embodiment of the present invention. Detailed Implementation

[0017] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0018] The illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0019] Existing pure titanium fixtures are prone to excessive contact resistance at the contact points with the workpiece, resulting in localized Joule heat concentration when energized. This causes a sharp rise in contact temperature, which in turn leads to ablation. This not only damages the fixture and the workpiece but may also disrupt the stability of the conductive circuit due to poor contact. Low conductivity increases the overall electrical loss of the fixture, reduces the effective current density transferred to the workpiece surface, directly slows down the growth rate of the oxide film, prolongs the single process time, and significantly reduces the oxidation processing efficiency of the workpiece. The aforementioned problems have become key bottlenecks restricting the improvement of quality and efficiency in the anodizing process, necessitating optimization and improvement of the structure or material properties of pure titanium hangers. To address this, an anodizing titanium frame hanger is proposed, comprising: a hanger body 10; multiple workpiece hanging positions 11 located on the hanger body 10, each workpiece hanging position 11 having a support surface for supporting the workpiece to be anodized; and conductive hooks 20, hung on a conductive busbar and used to energize the hanger body 10. Each workpiece hanging position 11 has a conductive tungsten head 21 electrically connected to the hanger body 10, with multiple sets of conductive tungsten heads 21 spaced apart, protruding from the support surface of the workpiece hanging position 11 and in electrical contact with the workpiece.

[0020] In one embodiment, see Figures 5 to 10 The conductive tungsten tip 21 is made of tungsten alloy and can be fixed to the workpiece mounting position 11 by welding or threaded connection. The conductive tungsten tip 21 has high conductivity, which can effectively avoid the problem of rapid temperature rise and ablation at the contact point due to local Joule heat concentration between the conductive tungsten tip 21 and the workpiece. Furthermore, the workpiece to be oxidized does not contact the workpiece mounting position 11, but rather the conductive tungsten tip 21, thereby effectively avoiding the problem of contact between the fixture body 10 and the workpiece, and significantly improving the oxidation processing efficiency of the workpiece.

[0021] In one embodiment, a conductive hook 20 is hung on a conductive busbar, which drives multiple sets of anodized titanium frame hangers to move along the oxidation pool to perform anodizing on the workpiece, thereby rapidly forming an oxide film on the workpiece surface.

[0022] In one embodiment, to avoid contact between the workpiece to be oxidized and the workpiece of the hanger body 10, the end faces of multiple sets of conductive tungsten heads 21 constitute a support surface for supporting the workpiece A to be oxidized.

[0023] In one embodiment, see Figure 1 and Figure 2 The position of the conductive tungsten head 21 in the workpiece mounting position 11 can be adjusted so that the conductive tungsten head 21 protrudes out of the workpiece mounting position 11, thereby ensuring that the workpiece A to be oxidized is only in electrical contact with the conductive tungsten head 21.

[0024] In one embodiment, see Figure 5 The conductive tungsten head 21 is welded to the workpiece mounting position 11.

[0025] In another embodiment, see Figure 6 and Figure 7 The workpiece hanging position 11 is provided with a fixing position 12, and the conductive tungsten head 21 is electrically connected to the fixing position 12.

[0026] In one embodiment, the fixing position 12 can be a tube or a cylindrical cavity opened on the workpiece hanging position 11, and the conductive tungsten head 21 is inserted into the tube or cylindrical cavity of the fixing position 12 to realize the electrical connection between the conductive tungsten head 21 and the workpiece hanging position 11.

[0027] In one embodiment, see Figures 5 to 10 To further improve the surface oxidation effect of the workpiece, the conductive tungsten head 21 is rod-shaped with one end larger than the other, and the smaller end of the conductive tungsten head 21 is in electrical contact with the surface of the workpiece A to be oxidized.

[0028] In one embodiment, the multiple sets of conductive tungsten tips 21 make contact with the surface of the workpiece to be oxidized in one or more ways, such as lines, points, or surfaces.

[0029] See Figure 5 , Figure 8 and Figure 9 The end face of the aforementioned conductive tungsten tip 21 can be in the shape of an "I" or a cylinder or a sphere. The contact area between the end face of the conductive tungsten tip 21 and the workpiece should be minimized as much as possible, while ensuring electrical connection with the workpiece.

[0030] In one embodiment, the conductive tungsten head 21 includes a fixing sleeve 211 and a contact body 212. The fixing sleeve 211 is fixed on the workpiece hanging position 11, and the contact body 212 is inserted into the fixing sleeve 211. One end of the contact body 212 extending out of the fixing sleeve 211 makes electrical contact with the surface of the workpiece A to be oxidized.

[0031] In the above embodiments, the fixing sleeve 211 is welded or inserted into the cavity or cylindrical cavity of the fixing position 12.

[0032] In one embodiment, to ensure elastic contact between the contact body 212 and the workpiece, the contact body 212 is generally rod-shaped, the fixing sleeve 211 is generally tubular, and a spring 213 is sleeved on the contact body 212, with the two ends of the spring 213 abutting against the tube end of the fixing sleeve 211 and the contact body 212, respectively.

[0033] In one embodiment, see Figure 10 and Figure 11 Two sets of conductive tungsten tips 21 are provided on two sides of the workpiece. The end faces of the contact bodies 212 of the two sets of conductive tungsten tips 21 abut against the two sides of the workpiece respectively, thereby effectively positioning the workpiece. Under the elastic force of the spring 213, the electrical connection with the workpiece is ensured.

[0034] In one embodiment, to adjust the length of the contact body 212, the cavity of the fixing sleeve 211 is provided with an internal thread section, and the outer wall of the contact body 212 is provided with an external thread section, and the contact body 212 and the fixing sleeve 211 form a threaded connection.

[0035] By screwing the contact body 212, one end of the contact body 212 can be extended beyond the fixed sleeve 211, thereby ensuring reliable contact between the contact body 212 and the workpiece and ensuring electrical connection between the contact body 212 and the workpiece.

[0036] In one embodiment, the tube body of the fixed sleeve 211 is rotatably mounted on the workpiece hanging position 11 via a hinge shaft, and the angle between the hinge shaft and the workpiece hanging position 11 is adjustable.

[0037] See Figure 4 The aforementioned fixed position 12 is hinged to the first bracket 13, the first bracket 13 is hinged to the second bracket 14, and the second bracket 14 is fixedly connected to the workpiece hanging position 11. By fixing the two sets of hinge shafts, the fixed sleeve 211 can be adjusted in three-dimensional space to adapt to the contact and mounting requirements of different workpieces.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anodized titanium frame hanger, characterized in that, include: Hanging device body (10); Multiple sets of workpiece hanging positions (11) are provided on the hanger body (10), and the workpiece hanging positions (11) are provided with a support surface for supporting the workpiece to be oxidized. A conductive hook (20) is hung on a conductive busbar and is used to energize the hanging body (10); A conductive tungsten head (21) is provided on the workpiece hanging position (11). The conductive tungsten head (21) is electrically connected to the hanging body (10). Multiple sets of conductive tungsten heads (21) are arranged at intervals. The multiple sets of conductive tungsten heads (21) protrude from the support surface of the workpiece hanging position (11) and are in electrical contact with the workpiece.

2. The anodized titanium frame hanger according to claim 1, characterized in that: The end faces of the multiple sets of conductive tungsten tips (21) constitute a support surface for supporting the workpiece to be oxidized.

3. The anodized titanium frame hanger according to claim 1, characterized in that: The conductive tungsten head (21) is welded to the workpiece mounting position (11).

4. The anodized titanium frame hanger according to claim 1, characterized in that: The workpiece hanging position (11) is provided with a fixing position (12), and the conductive tungsten head (21) is electrically connected to the fixing position (12).

5. The anodized titanium frame hanger according to claim 1, characterized in that: The conductive tungsten head (21) is rod-shaped with one end larger than the other. The smaller end of the conductive tungsten head (21) is in electrical contact with the surface of the workpiece to be oxidized.

6. The anodized titanium frame hanger according to claim 1, characterized in that: The multiple sets of conductive tungsten tips (21) make contact with the surface of the workpiece to be oxidized in one or more ways, such as lines, points, or surfaces.

7. The anodized titanium frame hanger according to claim 5, characterized in that: The conductive tungsten head (21) includes a fixing sleeve (211) and a contact body (212). The fixing sleeve (211) is fixed on the workpiece hanging position (11), and the contact body (212) is inserted into the fixing sleeve (211). One end of the contact body (212) extends out of the fixing sleeve (211) and makes electrical contact with the surface of the workpiece to be oxidized.

8. The anodized titanium frame hanger according to claim 7, characterized in that: The contact body (212) is rod-shaped, the fixing sleeve (211) is tubular, and a spring (213) is fitted on the contact body (212). The two ends of the spring (213) abut against the tube end of the fixing sleeve (211) and the contact body (212), respectively.

9. The anodized titanium frame hanger according to claim 7, characterized in that: The cavity of the fixed sleeve (211) is provided with an internal thread section, and the outer wall of the contact body (212) is provided with an external thread section. The contact body (212) and the fixed sleeve (211) form a threaded connection.

10. The anodized titanium frame hanger according to claim 7, characterized in that: The tube body of the fixed sleeve (211) is rotatably mounted on the workpiece hanging position (11) via a hinge shaft, and the angle between the hinge shaft and the workpiece hanging position (11) is adjustable.

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