TWI582274B - Transmission element with chromium manganese oxide electroplated layer - Google Patents

Description

Transmission element with chrome oxide manganese coating

This invention relates to a transmission element, and more particularly to a transmission element having a chromium oxide manganese coating.

Regardless of consumer products such as automobiles, information, optoelectronics and communications, or the food industry, the transportation industry and the green energy industry, which rely on the people's livelihood, it is necessary to rely on the machine tools of machinery and equipment as the basis for production. The main transmission mechanism of the machine tool includes servo motor, controller, bearing, gear and transmission components. Linear slide, ball guide and ball screw are the main applications of the transmission component. In the transmission component, the linear slide is a rolling guide, and the slider on the slider is linearly driven with high precision by the sliding of the slider on the slide rail. The ball screw or the ball guide is a high-precision linear transmission of the components connected to the nut by the movement between the nut and the screw. Because linear slides, ball guides or ball screws have the characteristics of high positioning accuracy, high life, low pollution and high-speed forward and reverse transmission and conversion transmission, they have become the positioning and measurement system of the precision technology industry and precision machinery industry. One of the important components on the top.

Linear slides, ball guides or ball screws have high precision requirements and the hardness and wear resistance of the surface coating is very important in use. If the sliding is not smooth, hindered or loses precision after being used for a long time, the machine equipment will be discontinued during production. In addition, in order to distinguish the appearance of the product, it is desirable that the transmission components such as the linear slide, the ball guide or the ball screw have a noble gray black to be selected and recognized. The surface treatment technologies of the conventional linear slide group and the ball lead screw group are mainly electroplated chromium layer, electroplated nickel layer, electroless nickel plating layer, black oxide treatment and zinc phosphate (manganese) treatment. . However, in the selection of these surface treatment technologies, the industry has encountered problems such as excessive thickness of the plating layer, uneven plating layer, non-wearing of the plating layer, poor adhesion of the coating layer, or uneven gray-black.

In addition to the aforementioned surface treatment techniques, there is currently a technique of coating a metallic ceramic on the surface of an element. A metallized ceramic is a ceramic-structured co-form formed by a non-metallic element doped with a metal element. Thereby, the metallized ceramic can have both metal properties and ceramic properties. For example, some of the co-structures have the hardness of ordinary ceramics and good corrosion resistance, or even have metallic luster and electrical conductivity, or have the color of ceramics. When making metallized ceramics, the commonly used method is to co-sinter non-metallic elements with metal elements. The metallized ceramic formed by sintering is, for example, a metal nitride [for example, titanium nitride (TiN) or the like], a metal carbide (for example, graphite, tungsten carbide, zirconium carbide, chromium carbide, tantalum carbide, etc.), or a metal oxide ( For example, chromium oxide, tungsten oxide, manganese oxide, etc., other metallized ceramics include borides, tellurides, and the like. These metallized ceramics have been widely used It is used in components such as wear-resistant components, turning tools, heat exchangers and engine components, as well as in the fields of biomedical, military and space.

In various metallized ceramic molding methods, the method of forming a metallized ceramic on a substrate by using an electroplating method is the fastest and most convenient, and the plating layer is smooth and uniform, and the mechanical properties of the workpiece are not changed. For example, in the environmental protection and safety considerations, the Republic of China Patent Publication No. I456093 discloses a blackening agent using fluoroantimonic acid (H ₂ SiF ₆ ), nitrate or permanganate, a co-depositing agent of inorganic acid cobalt, phosphoric acid. The salt mixture is electroplated with a relatively environmentally friendly trivalent chromium plate to form a trivalent chromium oxide plating layer having an amorphous phase structure on the substrate. Compared with other technologies, this oxide plating layer has a higher degree of ceramization and a higher degree of blackening.

In addition, the Republic of China Patent Publication Nos. M501441, M498114, M492390, and M490197 propose surface treatment techniques for coating chromium oxide cobalt plating. However, for some practical applications, although these chromium oxide cobalt coatings have a deep black color and good corrosion resistance, the chromium oxide cobalt coating is thin and soft, and the wear resistance is not good.

Therefore, there is a need for a surface treatment technique to provide the transmission element with a noble color of grayish black and good wear resistance.

Therefore, an object of the present invention is to provide a transmission component having a chromium oxide manganese plating layer, wherein the chromium oxide manganese plating layer contains a manganese oxide material, and the electroplating coating layer of the prior art can be improved in blackening degree and wear resistance. Low disadvantages.

Another object of the present invention is to provide a transmission component having a chromium oxide manganese coating which can form a ceramic chromic oxide manganese coating having a higher content of chromium oxide and manganese oxide, so that the chromium oxide manganese coating exhibits an appropriate grayish black color. And having a suitable plating hardness, so that the chromia manganese coating has a gray value scale (L%) of between 35 and 65, so the chromia manganese coating has a noble gray color.

A further object of the present invention is to provide a transmission component having a chromium oxide manganese coating having a groove on the surface of the chromium oxide manganese plating layer, together with the characteristics of the metallized ceramic of chromium manganese oxide, which can provide a good coating substrate. Therefore, the chrome oxide manganese plating layer has good paint adhesion, and the coating material can be firmly adhered to the chromium oxide manganese plating layer.

Still another object of the present invention is to provide a transmission component having a chromium oxide manganese coating having a chrome-manganese coating having a grayish black to black color. Therefore, when a light color pigment and a thin resin layer are used as the coating layer, the coating layer can match the color of the chromium oxide manganese plating layer, and the transmission member can have a noble color, so that the applicability of the transmission component can be expanded.

According to the above object of the present invention, a transmission element having a chromium oxide manganese plating layer is proposed. The transmission element comprises a component substrate and a chromium oxide manganese coating. The chromium oxide manganese coating is plated on the surface of the element substrate, wherein the chromium oxide manganese plating layer is composed of chromium element, oxygen element, hydrogen element, manganese element and phosphorus element. In this chromium oxide manganese coating, the weight ratio of chromium to manganese is from 3:1 to 1:1. The chromium oxide manganese plating layer contains a main component in which a main component contains chromium (Cr), a chromium oxide material, manganese (Mn), and a manganese oxide material. The chromium oxide manganese coating has a gray scale value of 35 to 65.

According to an embodiment of the invention, the material of the element substrate is selected from the group consisting of iron, nickel, chromium, molybdenum, copper, and alloys thereof.

According to another embodiment of the present invention, the chromium oxide material comprises chromium oxide (Cr ₂ O ₃ ), chromium trioxide (Cr ₃ O ₄ ) or a combination thereof, and the manganese oxide material comprises trimanganese tetraoxide ( Mn4O3), manganese dioxide (MnO ₂ ), dimanganese trioxide (Mn ₂ O ₃ ), or a combination thereof.

According to still another embodiment of the present invention, the chromia-manganese plating layer further comprises a secondary component, and the component comprises a phosphide material and a phosphide manganese material, wherein the chromium phosphide material is a trivalent chromium phosphide (CrP). And the phosphide manganese material is a divalent manganese phosphide (Mn ₃ P ₂ ), a trivalent manganese phosphide (MnP), a tetravalent manganese phosphide (Mn ₃ P ₄ ), or a combination thereof.

According to still another embodiment of the present invention, the chromia-manganese plating layer further comprises a secondary component, and the component comprises a chromic hydroxide material and a manganese hydroxide material, wherein the chromic hydroxide material is a hydroxide of trivalent chromium ( Cr(OH) ₃ ), the manganese hydroxide material is a hydroxide of divalent manganese (Mn(OH) ₂ ), a hydroxide of trivalent manganese (Mn(OH) ₃ ) or a hydroxide of tetravalent manganese ( Mn(OH) ₄ ), or a combination thereof.

According to still another embodiment of the present invention, the chromia-manganese plating layer has an average thickness of from 0.5 μm to 10 μm .

According to still another embodiment of the present invention, the transmission component further includes a resin layer, wherein the resin layer is coated on the chromium oxide manganese plating layer.

According to still another embodiment of the present invention, the material of the resin layer comprises a cerium oxide (SiO ₂ )-based colloidal coating, a polysiloxane-based coating, and perfluorinated chemicals (PFCs). Base coating, fluororesin based coating, phenolic resin based coating, polycarboxyethylene resin coating, polycarboxyethylene silicon modified resin coating, or combinations thereof .

According to still another embodiment of the present invention, the transmission component further includes an interposer covering the surface of the component substrate and interposed between the component substrate and the chromia-manganese plating layer.

According to still another embodiment of the present invention, the material of the interposer is selected from the group consisting of iron, nickel, chromium, copper, silver, gold, and alloys thereof.

100‧‧‧Transmission components

100a‧‧‧Transmission components

100b‧‧‧Transmission components

102‧‧‧Component substrate

104‧‧‧Chromium oxide manganese coating

106‧‧‧ surface

108‧‧‧Intermediary

110‧‧‧ plating bath

112‧‧‧ plating solution

114‧‧‧ resin layer

200‧‧‧Transmission components

202‧‧‧ screw

204‧‧‧ Nuts

300‧‧‧Transmission components

302‧‧‧Slide rails

304‧‧‧ Slider

306‧‧‧Contact surface

308‧‧‧ Non-contact surface

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; FIG. 2 is a partial cross-sectional view showing another transmission component having a chromium oxide manganese plating layer according to an embodiment of the present invention; FIG. 3 is a schematic cross-sectional view showing a transmission component according to an embodiment of the present invention; Schematic diagram of a plating apparatus for a chromium oxide manganese plating layer having a transmission element of a chromium oxide manganese plating layer according to an embodiment; [Fig. 4] is a photograph of a surface topography taken by a scanning electron microscope (SEM) of a transmission element having a chromium oxide manganese plating layer according to an embodiment of the present invention; [Fig. 5] is implemented according to one embodiment of the present invention. A surface topography photograph of a transmission element having a chromium oxide manganese plating layer; FIG. 6 is a diagram showing another transmission element having a chromium oxide manganese plating layer according to an embodiment of the present invention. FIG. 7A is a partial perspective view showing a transmission component having a chromium oxide manganese plating layer according to an embodiment of the present invention; FIG. 7B is a partial cross-sectional view showing the screw of the transmission component of FIG. 7A. FIG. 7C is a partial cross-sectional view showing the nut of the transmission component of FIG. 7A; FIG. 8A is a partial perspective view of a transmission component having a chromium oxide manganese coating according to another embodiment of the present invention. FIG. 8B is a partial cross-sectional view showing the contact surface of the slide rail and the slider of the transmission component of FIG. 8A; FIG. 8C is a view showing the slide rail of the transmission component of FIG. 8A. A partial cross-sectional view of the non-contact surface of the slider; and [FIG. 8D] is a partial cross-sectional view of the slider of the transmission component of FIG. 8A.

Please refer to FIG. 1 , which is a partial cross-sectional view showing a transmission component having a chromium oxide manganese plating layer according to an embodiment of the present invention. The transmission element 100 can be, for example, a common transmission element such as a linear slide, a ball guide or a ball screw. In some examples, the transmission component 100 primarily comprises an element substrate 102 and a chromium oxide manganese coating 104.

The material of the component substrate 102 can be metallic or non-metallic for different applications. When the material of the component substrate 102 is metal, electroplating can be performed directly on the component substrate 102 to directly plate the chromia-manganese plating layer 104 on the surface 106 of the component substrate 102. In the case where the material of the element substrate 102 is a metal, the material of the element substrate 102 may be selected, for example, from a group consisting of iron, nickel, chromium, molybdenum, copper, and an alloy of the above metals. For example, the material of the element substrate 102 may be a metal alloy such as high carbon steel, chrome molybdenum steel or stainless steel. In some specific examples, the material of the component substrate 102 can be titanium or aluminum.

Please refer to FIG. 2, which is a partial cross-sectional view showing another transmission component having a chromium oxide manganese plating layer according to an embodiment of the present invention. When the material of the component substrate 102 is a non-metal material, such as a plastic material, a ceramic material, a glass material or a fiber material, it may be firstly electroplated, electrolessly plated, vapor deposited, vapor deposited, or physically deposited. An interposer 108 is formed on the surface 106 of the material 102. Next, the chromium oxide manganese plating layer 104 is further plated on the interposer 108. Thus, in such an example, in addition to the component substrate 102 and the chromia manganese coating 104, the transmission component 100a further includes an interposer 108, wherein the interposer 108 overlies the surface 106 of the component substrate 102 and is interposed between the components Between the material 102 and the chromia-manganese plating layer 104. In some demonstrations In the example, the material of the interposer 108 is selected from the group consisting of iron, nickel, chromium, copper, silver, gold, and alloys thereof.

In some specific examples, depending on the application, when the material of the component substrate 102 is metal, it may be firstly electroplated, electrolessly plated, vapor deposited, chemical vapor deposited (CVD), or physically vapor deposited (PVD). The interposer 108 is plated on the surface 106 of the element substrate 102, and the chromia-manganese plating layer 104 is plated on the interposer 108. For example, when the material of the element substrate 102 is a metal that is not easily plated such as titanium or aluminum, the interposer 108 may be formed on the surface 106 of the element substrate 102 first. In such an example, the material of the interposer 108 can likewise be selected, for example, from a group consisting of iron, nickel, chromium, copper, silver, gold, and alloys thereof.

In the present embodiment, the chromium oxide manganese plating layer 104 is plated on the element substrate 102 by electroplating. Please refer to FIG. 3 , which is a schematic diagram of a plating apparatus for a chromium oxide manganese plating layer having a transmission element of a chromium oxide manganese plating layer according to an embodiment of the present invention. When the chromium oxide manganese plating layer 104 is plated on the element substrate 102, the plating bath 112 is first filled with a plating solution 112 of trivalent chromium. The trivalent chromium plating solution 112 can dissolve a covalent deposition agent of a trivalent chromium salt, a binder, a blackening additive, and a manganese ion.

In the present embodiment, in order to adjust the degree of blackening of the chromium oxide manganese plating layer 104 from grayish black to black, in order to meet specific applications, the composition of the trivalent chromium plating solution 112 used in some embodiments may be as follows: Listed in Table 2. These examples adjust the composition and concentration ratio of the trivalent chromium plating solution 112 to adjust the color of the chromium oxide manganese plating layer 104 such that the chromium oxide manganese plating layer 104 has a gray scale value (L%) of from about 35 to about 65.

Table 1, composition of trivalent chromium plating solution

As can be seen from Tables 1 and 2 above, these examples are the use of fluoroantimonic acid (H ₂ SiF ₆ ), a blackening agent for nitrate or cerium salts, a co-depositing agent for inorganic manganese, and a complexing agent for halogen salts. The chromium oxide manganese plating layer 104 having an amorphous phase structure is electroplated on the element substrate 102 by environmentally friendly trivalent chromium plating. When the element substrate 102 starts to be plated, the metal chromium in the trivalent chromium plating solution 112 is reduced, and the chromium is oxidized and phosphatized, and the metal manganese is reduced, and the manganese is oxidized or phosphatized, thereby further on the element substrate. A chromium oxide manganese plating layer 104 is formed by co-deposition on 102.

In some examples, the chromium oxide manganese coating 104 is composed of a chromium element, an oxygen element, a hydrogen element, a manganese element, and a phosphorus element. The chromium oxide manganese plating layer 104 is mainly composed of oxygen element, chromium element and manganese element, and there is still hydrogen element, which is mainly composed of phosphorus element. The chromium oxide manganese plating layer 104 has an amorphous phase structure. For example, in the chromium oxide manganese plating layer 104, the weight ratio of the chromium element to the manganese element may be from 3:1 to 1:1. The chromium oxide manganese plating layer 104 may contain a main component. In some exemplary examples, the main component of the chromium oxide manganese coating 104 comprises a chromium metal, a chromium oxide material, a manganese, and a manganese oxide material. The chromium oxide material may, for example, comprise chromium oxide, chromium trioxide or a combination thereof. The chromium oxide material may also contain a small amount of oxygen and chromium oxides other than chromium trioxide and chromium trioxide. The manganese oxide material may, for example, comprise trimanganese tetraoxide, manganese dioxide, dimanganese trioxide or a combination thereof. In some exemplary examples, the chromium oxide material consisting of chromium oxide and/or chromium trioxide has a higher content, and the manganese oxide material composed of trimanganese tetraoxide, manganese dioxide and/or manganese trioxide It may have a higher content than the chromium oxide material.

In some examples, the chromium oxide manganese coating 104 further comprises a minor component. In the chromium oxide manganese plating layer 104, the content of the main component is much larger than that of the secondary component. In some exemplary examples, the minor component of the chromium oxide manganese coating 104 comprises a chromium phosphide material and a manganese phosphide material, wherein the chromium phosphate material may comprise a trivalent chromium phosphide, and the manganese phosphide material may comprise divalent manganese. a phosphide, a trivalent manganese phosphide, a tetravalent manganese phosphide, or a combination thereof. Phosphating chrome materials can also contain A small amount of a compound of phosphorus and chromium composed of a different phosphide of trivalent chromium. In other exemplary embodiments, the minor component of the chromium oxide manganese coating 104 comprises a chromium hydroxide material and a manganese hydroxide material, wherein the chromium hydroxide material comprises a hydroxide of trivalent chromium and the manganese hydroxide material comprises divalent manganese. a hydroxide, a hydroxide of trivalent manganese or a hydroxide of tetravalent manganese, or a combination thereof. The chromium hydroxide material may also contain a small amount of a compound of hydroxide and chromium composed of a hydroxide of a different trivalent chromium. The secondary component of the chromium oxide manganese plating layer 104 may also include the above-described chromium phosphide material, manganese phosphide material, chromium hydroxide material and manganese hydroxide material.

In some examples, the chromium oxide manganese coating 104 plated on the component substrate 102 is between gray-black and black with a grayscale value (L%) of between about 35 and about 65. Among them, the gray scale value is used to measure the degree of black, using 100 gray scales, the gray scale brightness from gray scale value 0 (black) to gray scale value 99 (white). When the content of chromium oxide in the chromium oxide manganese plating layer 104 is higher, the degree of blackening of the chromium oxide manganese plating layer 104 is higher. When the content of manganese dioxide in the chromium oxide manganese plating layer 104 is higher, the gray degree of the chromium oxide manganese plating layer 104 is higher.

Please refer to FIG. 1 , FIG. 4 and FIG. 5 simultaneously , wherein FIG. 4 and FIG. 5 are respectively different magnifications of a scanning electron microscope SEM image of a transmission component having a chromium oxide manganese plating layer according to an embodiment of the present invention. Surface topography photo. The surface of the chromium oxide manganese coating 104 is in addition to chromium metal, chromium oxide and a small amount of oxides of oxygen and chromium of different compositions; hydroxide of trivalent chromium, chromium phosphide and a small amount of compounds of different compositions of hydroxide and chromium , phosphorus and chromium compounds; manganese, manganese oxide and a small amount of different compositions of oxygen and manganese compounds; and manganese oxide and manganese phosphide and other four groups of amorphous phase structure, more grooved microstructure . By means of the groove-like microstructure, the irradiation can be carried out in oxygen The light on the surface of the chromium-manganese plating layer 104 is not easily refracted, thereby changing the gray scale value of the chromium oxide manganese plating layer 104.

Referring again to FIG. 1, the thickness of the chromium oxide manganese plating layer 104 is very thin and dense, and the thickness of the chromium oxide manganese plating layer 104 can be adjusted according to the plating conditions. In the present specification, the thickness of the chromium oxide manganese plating layer 104 means the average thickness of the chromium oxide manganese plating layer 104, and does not refer to the thickness of a specific measurement point. In order to prevent the variation of the transmission element 100 having the chromia-manganese-plated layer 104 before and after electroplating from affecting the mechanical precision, the thickness of the chromia-manganese-plated layer 104 may preferably be less than about 5 μm, and may even be controlled to be from about 1 μm to about 3 μm. . For different applications, the plating time can be extended and the plating temperature can be lowered, and the thickness of the chromium oxide manganese plating layer 104 can be increased to less than 10 μm . If the plating time is increased again, it may exceed 10 μm, but the adhesion will decrease. Although this is not the optimum plating thickness, it is still within the reach of the technology of the present invention. Thus, in some examples, the chromium oxide manganese coating 104 has a thickness of from about 0.5 μm to about 10 μm . The thickness of the chromium oxide manganese coating 104 can be examined using a number of scientific methods or can be analyzed using photomicrographs of the cross section of the coating.

In some exemplary examples, the chromium oxide manganese coating 104 may have a surface hardness of up to about 800 Hv. Even, it can be adjusted according to the plating conditions for different applications, so that the surface hardness of the chromium oxide manganese plating layer 104 can reach about 1200 Hv or more.

Further, the linear polarization corrosion current of the chromium oxide manganese plating layer 104 may be less than 1 × 10 ^-4 ampere. Similarly, the plating conditions can be adjusted for different applications such that the linearly polarized corrosion current of the chromium oxide manganese coating 104 can be less than about 1 x 10 ^-5 amps.

In addition, the weather resistance of the chromium oxide manganese plating layer 104 was tested by a salt spray test in which the salt spray test was conducted in accordance with the weather resistance test of the American Society for Testing and Materials (ASTM) B-117 in 5% sodium chloride droplets. The chromium oxide manganese coating 104 can pass at least 48 hours of testing and has good corrosion resistance. It can be adjusted according to the conditions of electroplating for different applications, so that the weathering test of ASTM B-117 of chrome oxide manganese plating layer 104 can reach more than 108 hours in 5% sodium chloride spray.

Please refer to FIG. 6 , which is a partial cross-sectional view showing still another transmission component having a chromium oxide manganese plating layer according to an embodiment of the present invention. In some examples, the transmission element 100b includes a resin layer 114 in addition to the interposer 108 and the chromium oxide manganese plating layer 104, wherein the resin layer 114 is overlaid on the chromium oxide manganese plating layer 104. In some exemplary examples, the material of the resin layer 114 comprises a cerium oxide based so-gel coating, a polyoxyalkylene compound based coating, a perfluorocarbon based coating, a perfluororesin based coating, a phenolic aldehyde. Resin-based coatings, acrylic coatings (also known as acrylic coatings), acrylic enamel-modified coatings, or combinations thereof. However, other various coating materials can also be applied as the material of the resin layer 114, which will not be enumerated here.

In addition, for different applications, pigments, matting agents, varnishes, and the like of various colors may be added to the resin layer 114 according to requirements to exhibit different colors or dull colors. Since the color of the chromium oxide manganese plating layer 104 is a grayish black to black color of noble color, when the light color pigment or the thin resin layer 114 is added, the color of the chromium oxide manganese plating layer 104 can be completely covered to reveal the color of the resin layer 114. Due to the dark black color of the prior art chromia-cobalt composite coating, it is difficult to completely cover the deep black by adding a light pigment or a thin resin layer. The color is plated to reveal the color of the resin layer. Further, in the present embodiment, when the resin layer 114 of the pigment is not added, the resin layer 114 is commonly referred to as a varnish at this time, and the transparent or translucent resin layer 114 can expose the gray-black color of the chromium oxide manganese plating layer 104 to form a noble one. The color can be expanded to expand the application.

Since the surface of the chromia-manganese plating layer 104 has grooves and forms a grainy rough surface, it has a good coating adhesion. For example, the adhesion of the resin layer 114 to the chromium oxide manganese plating layer 104 can be at least 4 B or more according to the ASTM-D3359 test.

The cerium oxide-based colloidal coating is a film-forming substance in which an aqueous dispersion of colloidal cerium oxide is used. Since cerium oxide has characteristics such as high porosity, high hydrophilicity, and high specific surface area, the hardness, abrasion resistance, and scratch resistance of the resin layer 114 can be increased, and the surface of the chromia-manganese plating layer 104 can be provided with strong protection.

The resin layer 114 formed of the polyoxyalkylene compound-based coating material can impart wear resistance, lubricity, adhesion, and simple processability to the surface of the chromium oxide manganese plating layer 104. Among them, the polyoxyalkylene compound-based coating is a coating formed by copolymerization of a decane compound with a substance such as an acrylate polymer. Therefore, the resin layer 114 formed by the polyoxyalkylene compound-based coating can enhance the surface physical properties of the chromia-manganese plating layer 104, and has properties such as slipiness, fit, scratch resistance, surface smoothness, flexibility, and hydrophobicity.

The perfluorocarbon compound is an organic compound, and the main characteristics of the perfluorocarbon-based coating are excellent chemical resistance, good processability, heat resistance to 260 ° C, and high lubricating properties. The transmission element 100b of the chromia-manganese plating layer 104 coated with the resin layer 114 formed of the perfluorocarbon-based coating material can be applied to Aviation equipment, gaskets, gaskets, fire insulation tools, tanks, containers, surface coatings for 3C products or medical equipment.

The perfluororesin-based coating can be, for example, a polytetrafluoroethylene (PTFE) coating, a polychlorotrifluoroethylene (PCTFE) coating, a polyvinylidene fluoride (PVDF) coating, an ethylene-tetrafluoroethylene copolymer (ETFE) coating, or ethylene. - chlorotrifluoroethylene copolymer (ECTFE) coating, polyvinyl fluoride (PVF) coating, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) (commonly known as fusible polytetrafluoroethylene) coating, PTFE Ethylene-hexafluoropropylene copolymer (FEP) (commonly known as fluoroplastic 46) coating, tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer coating, and the like. The transmission element 100b with the chromium oxide manganese plating layer 104 coated with the resin layer 114 formed of the perfluoro resin-based coating material can have excellent high and low temperature resistance, dielectric properties, chemical stability, weather resistance, nonflammability, and non-stickiness. And low friction coefficient and other characteristics.

The phenol resin-based coating material is a synthetic resin produced by condensation polymerization of a phenol and an aldehyde. The transmission member 100b having the chromium oxide manganese plating layer 104 coated with the resin layer 114 formed of the phenol resin-based coating material can be characterized by being hard, abrasion resistant, water resistant, moisture resistant, chemically resistant, and insulating.

Transmission element of chromium oxide manganese plating layer 104 of resin layer 114 formed of coating of acrylic resin coating or acrylic enamel modified resin (also referred to as acrylic modified resin coating or polycarbonylethylene denatured resin coating) 100b can have the characteristics of hard surface, wear resistance and chemical resistance. Especially in the case of good spray control, the transmission element 100b coated with the acrylic enamel modified resin coating can achieve a hardness of 3H or more in pencil hardness.

The following examples are various aspects of the transmission element having the chromium oxide manganese plating layer created by the present invention, but the actual aspect is not limited thereto.

<Example 1>

7A to FIG. 7C, FIG. 7A is a partial perspective view showing a transmission component having a chromium oxide manganese plating layer according to an embodiment of the present invention, and FIG. 7B and FIG. 7C respectively show the screw of the transmission component. A schematic view of a partial section with a nut. The transmission element 200 having the chromia-manganese plating layer applied in the present embodiment is a ball screw set. As shown in FIG. 7A, the transmission member 200 is comprised of a screw 202 and a nut 204, wherein the nut 204 is rotatable along the screw 202 to produce an upward or downward slide. In the present embodiment, as shown in FIG. 7B, the screw 202 has a cross-sectional structure similar to that of the transmission component 100 of FIG. 1, and includes an element substrate 102, and a chromium oxide manganese plating layer 104 plated on the surface 106 of the component substrate 102. . On the other hand, as shown in FIG. 7C, the nut 204 has a cross-sectional structure similar to that of the transmission component 100b of FIG. 6, and includes an element substrate 102, a chromium oxide manganese plating layer 104 plated on the surface 106 of the element substrate 102, and A resin layer 114 coated on the chromium oxide manganese plating layer 104.

In some examples. The element substrate 102 of the screw 202 and the nut 204 are both chrome molybdenum steel. For the chromium oxide manganese plating layer 104 of the screw 202 and the nut 204, the composition and operating conditions of the above-mentioned trivalent chromium plating solution are electroplated on the element substrate 102. The composition of the chromium oxide manganese plating layer 104 is as described above in accordance with Table 1, and will not be described herein. The characteristics of the screw 202 and the nut 204 are as follows in Table 3.

Table 3, the characteristics of the embodiment 1

Among them, the corrosion resistance test is based on AutoLAB impedance spectrum analysis linear polarization test, the evaluation criteria are as follows: level 1, linear polarization corrosion current (amperes) less than 1 × 10 ^-7 or less; level 2, 1 × 10 ^-6 or less ; 3, 1 × 10 ^-5 or less; 4, 1 × 10 ^-4 or more. The salt spray test is based on the weather resistance test of 5% sodium chloride droplets according to ASTM B-117, and the following examples show the same method.

In this embodiment, as shown in FIG. 7C, in order to further protect the surface of the nut 204, the chrome-manganese plating layer 104 of the nut 204 is sprayed with a layer of resin modified by a yttrium-acrylic resin coating having a thickness of 5 μm or less. Layer 114. The adhesion of this resin layer 114 conforms to the requirements of ASTM-D3359 Hundred Test 4B. Further, the screw 202 may optionally not spray the resin layer 114. This is because the screw 202 is protected by the chrome oxide manganese plating layer 104 which is very thin and has wear resistance and weather resistance, and does not affect the movement of the nut 204, but also meets the precise requirements. Further, the transmission element 200 of the ball screw group composed of the screw 202 and the nut 204 has a sufficient degree of blackening, and therefore has good functionality in addition to aesthetics.

<Example 2>

Referring to FIG. 7A to FIG. 7C again, the embodiment is the same as the first embodiment. The transmission component 200 of the embodiment is also a ball screw set composed of a screw 202 and a nut 204. The difference between the two is in the embodiment. The chromium oxide manganese plating layer 104 of the screw 202 and the nut 204 is the trivalent chromium electricity of the above Table 2. The plating solution composition and operating conditions are electroplated on the element substrate 102. The characteristics of the screw 202 and the nut 204 of this embodiment are as follows in Table 4.

<Example 3>

Please refer to FIG. 8A to FIG. 8D , wherein FIG. 8A is a partial perspective view of a transmission component having a chromium oxide manganese plating layer according to another embodiment of the present invention, and FIGS. 8B and 8C respectively show the sliding of the transmission component. A schematic cross-sectional view of the contact surface of the rail and the slider and a non-contact surface, and FIG. 8D is a partial cross-sectional view showing the slider of the transmission component. The transmission component 300 having the chromia-manganese oxide coating of this embodiment is a linear slide rail set. As shown in FIG. 8A, the transmission component 300 includes a slide rail 302 and a sliding block 304. The slide rail 302 has a contact surface 306 that is in contact with the slider 304 and a non-contact surface 308 that is not in contact with the slider 304.

As shown in FIG. 8B, the portion of the contact surface 306 where the slide rail 302 is in contact with the slider 304 has a cross-sectional structure similar to that of the transmission component 100 of FIG. 1, but includes the component substrate 102, and is plated on the surface 106 of the component substrate 102. Chromium oxide manganese coating 104. On the other hand, as shown in FIG. 8C, the portion of the non-contact surface 308 of the slide rail 302 that is not in contact with the slider 304 has a cross-sectional structure similar to that of the transmission component 100b of FIG. 6, but includes the component substrate 102 and is plated on the component substrate 102. a chromium oxide manganese coating 104 on the surface 106, and a chromium oxide manganese coating 104 The upper resin layer 114. The resin layer 114 can protect the non-contact surface 308 of the slide rail 302. The contact surface 306 of the slide rail 302 is covered with a thin, wear-resistant and weather-resistant chrome-manganese-manganese coating 104, which does not affect the movement of the slider 304 thereon, and can also meet precise requirements.

In addition, as shown in FIG. 8C, the cross-sectional structure of the slider 304 is similar to the combination of the transmission component 100a of FIG. 2 and the transmission component 100b of FIG. 6, and includes the component substrate 102 covering the surface 106 of the component substrate 102. The interposer 108, the chromium oxide manganese plating layer 104 plated on the interposer 108, and the resin layer 114 coated on the chromium oxide manganese plating layer 104.

The characteristics of the slide rail 302 and the slider 304 of this embodiment are as shown in Table 5 below.

In the present embodiment, the component substrate 102 of the slide rail 302 is made of chrome molybdenum steel, and the component substrate 102 of the slider 304 is made of polycarbonate (PC) material. Since the component substrate 102 of the slider 304 is made of a non-metal material, the present embodiment applies an interposer 108 on the surface 106 of the component substrate 102 of the slider 304 by electroless plating, as shown in FIG. 8D. The material of this interposer 108 is nickel. In addition, the chromia-manganese plating layer 104 of the slide rail 302 and the slider 304 is formed by electroplating on the element substrate 102 or the interposer 108 according to the composition and operating conditions of the trivalent chromium plating solution of the above Table 1. The composition of the chromium oxide manganese plating layer 104 is as described above in accordance with Table 1, and will not be described herein.

In this embodiment, as shown in FIG. 8C and FIG. 8D, in order to further protect the non-contact surface 308 of the slide rail 302 and the surface of the slider 304, the chromia-manganese plating layer 104 of the non-contact surface 308 of the slide rail 302 is sprayed with a layer of resin layer 114 formed of an acrylic enamel modified resin coating having a thickness of 5 μm or less, and a chromium oxide manganese plating layer 104 of the slider 304 is sprayed with a layer of a thickness of 10 μm or less to form a copolymerization reaction of a substance such as an acrylate polymer. The resin layer 114 formed by the decane polymer coating. The adhesion of the resin layer 114 on the non-contact surface 308 of the slide rail 302 to the resin layer 114 on the slider 304 conforms to the requirements of ASTM-D3359 Hundred Test 4B. In addition, the degree of blackening of the transmission element 300 of the linear slide group composed of the slide rail 302 and the slider 304 is sufficient, so that it has good functionality in addition to aesthetics.

<Example 4>

Referring to FIG. 8A to FIG. 8D again, the present embodiment is the same as the third embodiment. The transmission component 300 of the present embodiment is also a linear slide group composed of a slide rail 302 and a slider 304. The difference between the two is in this implementation. For example, the slide rail 302 and the chromia-manganese plating layer 104 of the slider 304 are formed by electroplating on the element substrate 102 by the composition and operating conditions of the trivalent chromium plating solution of the above Table 2. The characteristics of the slide rail 302 and the slider 304 of this embodiment are as shown in Table 6 below.

It is apparent from the above embodiments that one of the advantages of the present invention is the chromia-manganese plating of the transmission element having the chromia-manganese oxide coating of the present invention. The layer contains a manganese oxide material, which can improve the disadvantage that the electroplating coating of the prior art has a deeper degree of blackening and lower wear resistance.

It can be seen from the above embodiments that another advantage of the present invention is that the transmission element having the chromia-manganese oxide coating layer of the present invention can form a ceramic chromia-manganese plating layer containing more chromium oxide and manganese oxide to make chromium oxide manganese oxide. The coating exhibits a suitable gray-black color and has a suitable coating hardness, so that the gradation value (L%) of the chromia-manganese plating layer is between 35 and 65, so that the chromia-manganese coating has a noble gray color.

According to the above embodiments, another advantage of the present invention is that the surface of the chromia-manganese plating layer of the transmission element having the chromia-manganese oxide coating of the present invention has a groove, and the characteristics of the metallized ceramic of the chromium-manganese oxide are added. It provides a good coating substrate, so the chrome oxide manganese coating has good coating adhesion, and the coating can be firmly adhered to the chromium oxide manganese coating.

From the above embodiments, it is a further advantage of the present invention that the chromia-manganese coating of the transmission element having the chromia-manganese oxide coating of the present invention has a grayish black to black color. Therefore, when a light color pigment and a thin resin layer are used as the coating layer, the coating layer can match the color of the chromium oxide manganese plating layer, and the transmission member can have a noble color, so that the applicability of the transmission component can be expanded.

While the present invention has been described above by way of example, it is not intended to be construed as a limitation of the scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100‧‧‧Transmission components

102‧‧‧Component substrate

104‧‧‧Chromium oxide manganese coating

106‧‧‧ surface

Claims (9)

A transmission component having a chromium oxide manganese plating layer, comprising: a component substrate; and a chromium oxide manganese plating layer plated on a surface of the component substrate, wherein the chromium oxide manganese plating layer is composed of chromium element, oxygen element, a hydrogen element, a manganese element and a phosphorus element, and in the chromium oxide manganese plating layer, the weight ratio of the chromium element to the manganese element is from 3:1 to 1:1, and the chromium oxide manganese plating layer comprises a main component, wherein The main component comprises a chromium, a chromium oxide material, a manganese and a manganese oxide material, wherein the chromium oxide material comprises chromium oxide, chromium trioxide or a combination thereof, and the manganese oxide material comprises trimanganese tetraoxide, manganese dioxide, Manganese trioxide or a combination thereof, and the chromium oxide manganese coating has a gray scale value of 35 to 65. A transmission element having a chromium oxide manganese plating layer according to claim 1, wherein the material of the element substrate is selected from the group consisting of iron, nickel, chromium, molybdenum, copper, and alloys thereof. The transmission component having a chromium oxide manganese plating layer according to claim 1, wherein the chromium oxide manganese plating layer further comprises a secondary component, the secondary component comprising a chromium phosphide material and a manganese phosphide material, wherein the chromium phosphide material It is a trivalent chromium phosphide, and the phosphide manganese material is a divalent manganese phosphide, a trivalent manganese phosphide, a tetravalent manganese phosphide, or a combination thereof. The transmission component having a chromium oxide manganese plating layer according to claim 1, wherein the chromium oxide manganese plating layer further comprises a primary component, the secondary component comprising a chromium hydroxide material and a manganese hydroxide material, wherein the chromium hydroxide material It is a hydroxide of trivalent chromium, which is a hydroxide of divalent manganese, a hydroxide of trivalent manganese or a hydroxide of tetravalent manganese, or a combination thereof. A transmission element having a chromium oxide manganese plating layer as claimed in claim 1, wherein the chromium oxide manganese plating layer has an average thickness of from 0.5 μm to 10 μm. The transmission component having the chromium oxide manganese plating layer of claim 1 further comprises a resin layer, wherein the resin layer covers the chromium oxide manganese plating layer. A transmission element having a chromium oxide manganese plating layer according to claim 6 wherein the material of the resin layer comprises cerium oxide, a polyoxyalkylene compound, a perfluorocarbon, a perfluoro resin, a phenol resin, an acrylic resin, or an acrylic acid.矽 modified resin, or a combination thereof. The transmission component having the chromium oxide manganese plating layer of claim 1 further comprises an interposer covering the surface of the component substrate and interposed between the component substrate and the chromium oxide manganese plating layer. A transmission element having a chromium oxide manganese plating layer according to claim 8 wherein the material of the interposer is selected from the group consisting of iron, nickel, chromium, copper, silver, gold, and alloys thereof.