Abstract: An adhering structure is disclosed. The adhering structure includes an adhering member, an adhesive layer, and a surface treatment layer sandwiched between the adhering member and the adhesive. The surface treatment layer includes a plurality of magnetic disabling particles. Each of the plurality of magnetic disabling particles has a core-shell structure, and includes a magnetic shell and a core capsulated in the magnetic shell. The core decreases an adhesive strength of the adhesive layer.

Abstract: An automatic positioning device includes a holder, a first motor, a securing block, a second motor, and a connecting rod. The first motor is mounted on the holder and horizontally slides relative to the holder. The securing block is fixed with the first motor. The second motor is mounted on the securing block and vertically slides relative to the securing block. The connecting rod is connected with the second motor. The first motor drives the connecting rod moving horizontally and the second motor drives the connecting rod moving vertically.

Abstract: An anode oxidation device comprises an anode oxidation tank, a force transmission mechanism, a fixing mechanism, an electric control mechanism, and a conduction mechanism. The tank comprises a first end and a second end opposite to the first end. The force transmission mechanism is rotatably fixed to the tank. The fixing mechanism is detachably fixed to the force transmission mechanism. The electronic control mechanism is connected to the force transmission mechanism and drives the force transmission mechanism to make the fixing mechanism move from the first end to the second end.

Abstract: A hanging module (100) for holding workpieces (80) thereon includes a pole (30), a plurality of resilient members (20) attached on the pole, and a plurality of retaining members (10) attached on the pole. The resilient members are slidable relative to the pole. Each retaining member is provided apart from each other with at least one resilient member located in-between.

Abstract: A laser engraving mechanism (100) for engraving a workpiece (16) includes an image receiver (12), an image processor (13), an engraving controller (14), and a laser emitting member (15). The image receiver screens the workpiece to form an image of the workpiece and transforms the image of the workpiece into electronic image signals. The image processor is connected to the image receiver. The image processor saves a group of datum coordinates, forms a group of engraving coordinates according to the electronic image signals, and compares the engraving coordinates with the datum coordinates. The engraving controller is connected to the image processor. The laser emitting member is connected to the engraving controller, and the engraving controller instructs the laser emitting member to engrave the workpiece based on a comparison of results between the engraving coordinates and the datum coordinates.

Abstract: A rack apparatus (100) includes a frame (10), a plurality of supporting members (106), and a plurality of retaining members (12). The supporting members are arranged/mounted on/to the frame. The retaining members are mounted on the supporting members. Each retaining member includes a fixing piece (120) and two supporting pieces (122, 124). The fixing piece has a notched mounting portion. The two supporting pieces are respectively positioned at an opposite side of the fixing piece. Each supporting piece forms a retaining portion (i.e., a through hole therein). The notched mounting portion and the retaining portions together help retain a workpiece within a given retaining member.

Abstract: A rack apparatus (100) for facilitating workpiece treatment includes a frame member (20) and a plurality of rack members (30). The rack members are detachably mounted on the frame member, wherein each rack member, in turn, includes a plurality of rack poles (305) that are detachably mounted thereon. When workpieces of large dimension or complicated shape require hanging/mounting on the rack apparatus, some rack poles and rack members can be disassembled, and thus the rack apparatus can provide more space to contain/carry these workpieces.

Abstract: A hanging module (100) for holding workpieces (80) thereon includes a pole (30), a plurality of resilient members (20) attached on the pole, and a plurality of retaining members (10) attached on the pole. The resilient members are slidable relative to the pole. Each retaining member is provided apart from each other with at least one resilient member located in-between.

Abstract: A rack apparatus (100) for facilitating workpiece treatment includes a frame member (20) and a plurality of rack members (30). The rack members are detachably mounted on the frame member, wherein each rack member, in turn, includes a plurality of rack poles (305) that are detachably mounted thereon. When workpieces of large dimension or complicated shape require hanging/mounting on the rack apparatus, some rack poles and rack members can be disassembled, and thus the rack apparatus can provide more space to contain/carry these workpieces.

Abstract: A surface treatment process for coloring metal articles includes following steps. Firstly, a metal article with a surface including a first surface portion and a second surface portion is provided. Secondly, a releasable coating is formed onto the first surface portion of the metal article. Thirdly, a first electro-depositable coating is applied onto the second surface portion of the metal article by means of a first electro-coat process. Fourthly, the releasable coating is removed from the first surface portion of the metal article. Finally, a second electro-depositable coating having a color different from that of the first electro-depositable coating is applied onto the first surface portion of the metal article by means of a second electro-coat process.

Abstract: A housing (10) used in portable electronic devices includes gripping portions (40) defined thereon, such gripping portions being bounded by grooving created in a surface of the housing. A method of manufacturing the housing is also provided, the method includes these steps: forming a housing; grinding the housing; polishing the housing; and forming the gripping portions on the housing.

Abstract: A laser engraving mechanism (100) for engraving a workpiece (16) includes an image receiver (12), an image processor (13), an engraving controller (14), and a laser emitting member (15). The image receiver screens the workpiece to form an image of the workpiece and transforms the image of the workpiece into electronic image signals. The image processor is connected to the image receiver. The image processor saves a group of datum coordinates, forms a group of engraving coordinates according to the electronic image signals, and compares the engraving coordinates with the datum coordinates. The engraving controller is connected to the image processor. The laser emitting member is connected to the engraving controller, and the engraving controller instructs the laser emitting member to engrave the workpiece based on a comparison of results between the engraving coordinates and the datum coordinates.

Abstract: A surface treatment process for a metal article includes the following steps. Firstly, a metal article is provided. Secondly, the metal article is anodized to form an anodic oxide layer on a surface thereof. Thirdly, the surface of the metal article is rinsed. Fourthly, the surface of the metal article is dyed. Fifthly, the now-dyed anodic oxide layer of the metal article is sealed. Finally, the metal article is rinsed using an acetic acid solution.

Abstract: A rack apparatus (100) includes a frame (110) and a plurality of retaining members (160) mounted on the frame. Each retaining member includes a plurality of retaining elements (166). Each retaining element includes a bracket (1662) and at least two arms (1664), an arm being respectively attached to each corresponding end of the bracket. Each arm includes a retaining portion (1668) bounding at least one opening (1669) therein.

Abstract: A surface treatment process for a welded metal article includes following steps. Firstly, a metal article with a weld joint region is provided. Secondly, the metal article is anodized to form an anodic oxide layer on a surface thereof. Thirdly, the surface of the anodized metal article is rinsed. Fourthly, at least the anodized surface of the metal article in the region of the weld joint region is activated in a nitric acid solution. Fifthly, the anodized surface (i.e., the anodic oxide layer) of the metal article is dyed. Sixthly, the anodic oxide layer of the metal article is sealed. Finally, the metal article is rinsed.

Abstract: An etchant includes ferric ions (Fe3+) and hydrochloric acid (HCl). The ferric ions (Fe3+) have a concentration in the approximate range of 30-70 grams/liter (g/l). The hydrochloric acid (HCl) has a concentration in the approximate range of 16-50 grams/liter (g/l). The resultant etchant is particularly suitable for etching aluminum and its alloys but may be useful for other etching situations.

Abstract: An etchant includes nitric acid (HNO3) having a percentage by mass in the approximate range of 4%-6%, hydrochloric acid (HCl) having a percentage by mass in the approximate range of 1%-3%; and ferric ions (Fe3+) having a concentration in the approximate range of 30-70 grams/liter (g/l). The resultant etchant is suitable for etching aluminum and its alloys. In fact, the etchant is capable of etching such a material to a depth of about 0.1 mm in about 1.8 min, when employed at a temperature in the approximate range of 38° C.-48° C. The etchant further may be recycled, for which an added oxidizer may further be employed.

Abstract: A rack apparatus (100) includes a frame (10), a plurality of supporting members (106), and a plurality of retaining members (12). The supporting members are arranged/mounted on/to the frame. The retaining members are mounted on the supporting members. Each retaining member includes a fixing piece (120) and two supporting pieces (122, 124). The fixing piece has a notched mounting portion. The two supporting pieces are respectively positioned at an opposite side of the fixing piece. Each supporting piece forms a retaining portion (i.e., a through hole therein). The notched mounting portion and the retaining portions together help retain a workpiece within a given retaining member.

Abstract: A mechanical engraver (10) includes a rotating plate (11), a first cutting tool (12), and a second cutting tool (13). The rotating plate has a rotating axis. The first cutting tool is mounted on the rotating plate and includes a first knifepoint (1221). The second cutting tool is mounted on the rotating plate and includes a second knifepoint (1321). A distance between the first knifepoint and the rotating axis is longer than a distance between the second knifepoint and the rotating axis. A distance between the first knifepoint and a bottom of the rotating plate is shorter than a distance between the second knifepoint and the bottom of the rotating plate. The first cutting tool includes a straight first cutting edge (1222). The second cutting tool includes a second cutting edge (1322) and a third cutting edge (1323), forming, at the second knifepoint, a cutting angle ? less than 180°.

Abstract: A method for measuring metal ion concentration includes the following steps of: providing a measuring solution having a corrosion inhibitor; adding a specific quantity of metal ion solution into the measuring solution; providing a potential scan device (1); measuring a cyclic voltammetry curve of the measuring solution using the potential scan device at a constant scan rate in a specific potential range, the cyclic voltammetry curve has a peak current; obtaining a linear equation, which indicates a linear relationship of peak current versus a concentration of corrosion inhibitor in standard corrosion inhibitor solution in the specific potential range, the peak current is a peak current of cyclic voltammetry curve of the specific quantity of metal ion solution metal ion in the standard corrosion inhibitor solution in the specific potential range; and determining a concentration of the corrosion inhibitor of the measuring solution by computing the peak current of the cyclic voltammetry curve of the measuring so