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  • How to get the quotation faster?

    Dear Friends,


    Welcome to Yongu Enclosure! Good choosing!


    How to get the quotation faster?

    1:  Stocking items: please contact Kin Peng for checking price: 有事您Q我


    2: Customized items:  Please contact Nina Lee for checking: 有事您Q我

  • Laser
    A process for surface treatment by optical principle, which is used on the buttons of mobile phones and electronic dictionaries.

    To put it simply, this is like this: for example, I want to make a keyboard with words on it, blue, green, red and gray, the key body is white, when laser engraving, first spray, blue, green , red, gray, each spray the corresponding color, be careful not to spray on other keys, so it looks like there are blue keys, green keys and other keys, and then a whole layer of white, this is a whole white keyboard, Each blue and green is wrapped underneath. At this point, laser engraving can be performed. The film made by the laser technology and the key map of the ID is used to sculpt the white oil, such as the letter "A", and the white on the stroke, or the blue or green. It is exposed, so that the letter buttons of various colors are formed.

    At the same time, if you want to transmit light, use PC or PMMA, spray a layer of oil, and sculpt the font part. If there is light below, it will be revealed, but the adhesion of various oils should be considered at this time.

    Because each color key needs to spray different oils, you should take this into consideration when making the structure. The keys should be separated to avoid spraying to unnecessary places. It is better to do two or more places with large loss. Multiple can be matched.

    The color difference of each color is bigger, the biggest one is black and white, for example, the machine is easy to distinguish, and it is also carved clean, so as not to be carved and not clean, which affects the appearance quality, and the fonts of different colors are not too close.

    The paint required for laser engraving is different from the composition of ordinary plastic shell paint. It is called double-leaf paint and has a soft texture and is suitable for engraving. In addition, before spraying the exterior paint, spray a layer of black on the surface of the raw material, otherwise there is no way to sculpt the color.

    Usually, the laser engraving machine can engrave the following materials: bamboo and wood products, plexiglass, metal plate, glass, stone, crystal, Corian, paper, two-color plate, alumina, leather, plastic, epoxy resin, polyester resin, Spray metal.
  • Sandblasting
    The application of blasting on metal surfaces is very common. The principle is to impact the accelerated abrasive particles against the metal surface to achieve rust removal, deburring, deoxidation or surface pretreatment, which can change the surface finish of the metal. And stress state. Some parameters that affect sand blasting techniques need to be noted, such as abrasive type, abrasive grain size, spray distance, spray angle and speed. In addition to sand blasting, shot blasting is also a good choice.

    The sand blasting process can be divided into two types: air pressure spray gun and impeller shot blasting. The advantage of the sand blasting process is that it can remove the peaks, remove the burrs after die casting, stamping, flame cutting and forging, and for thinner workpieces and pores. The burr effect is better, it can clean the residual sand in the sand casting process, clean the rust stain of the cast iron or steel, clean the heat treatment, burn, hot forging, rolling and other thermal processes. In addition, in coating applications, it removes existing coatings or protective layers and provides a shiny surface on defects that cover the casting, such as cracks or cold lines. Together with the surface stress, it provides a consistent roughening surface, oiling and spraying effect. When high-stress metal parts such as springs and connecting rods are continuously tapped, deformation and reinforcement will occur. This strengthening effect requires the use of a circular abrasive such as a stainless steel shot, which is used in a high-energy shot blasting machine or a dedicated powerful blasting machine. To determine the surface strengthening effect of the machine, the test workpiece can be shot blasted or sandblasted, and then the deformation is measured to meet the requirements.
  • Heat transfer (print)
    Thermal transfer is a technique in which a pattern or pattern is printed on a heat-resistant adhesive tape, and the pattern of the ink layer is printed on the finished material by heating and pressurizing. Even with a multi-color pattern, since the transfer operation is only a process, the customer can shorten the printing pattern and reduce the loss of material (finished product) due to printing errors. Using thermal transfer film printing, multi-color patterns can be imaged at once, without the need for color registration, and simple devices can print realistic patterns.

    The thermal transfer equipment is used to decorate aluminum profiles and various metal plates to achieve the effect of wood or marble. The thermal transfer equipment works according to the principle of thermal sublimation. It can quickly transfer the required wood grain or marble grain to the surface of the aluminum powder coating and penetrate into the interior of the coating in 3-5 minutes. Micron. Aluminum transfer production process: First, the film is used to wind the thermal transfer film to the required size. Second, the cut transfer film is ultrasonically welded into a workpiece wrapping bag according to the size of the workpiece by a transfer ultrasonic packaging machine. The third is to insert a workpiece wrapping bag made of a transfer film on the packaging platform. The fourth is to place the workpiece wrapped with the transfer film on the platform of the heat transfer machine, and then place 18 aluminum materials in turn, connect the aluminum ends to the vacuum taps and lock them, and open the vacuum switch. At this time, the transfer film is tight. Close to the aluminum. The trolley automatically sends the aluminum material to the baking oven. The baking oven automatically heats up to 220 degrees and keeps it warm for 3 minutes. The trolley automatically exits the baking oven. The fifth is to loosen the vacuum tap and remove the workpiece. The sixth is to remove the transfer film and check the quality of the workpiece.

    The lithographic thermal transfer production process uses a film cutter to cut the thermal transfer paper roll into a desired size. The second is to attach the thermal transfer paper film to the surface of the workpiece and place it on the flat hot stamping machine. The third is to push the plate to the heating zone of the flat heat transfer machine, press the pressure plate switch, press the heat transfer paper tightly on the workpiece, and heat and keep it for one minute. The fourth is to raise the pressure plate, push the workpiece to the piece, remove the transfer film and remove the workpiece and check.

    Thermal transfer technology is widely used in electrical appliances, daily necessities, building materials and so on. Due to its resistance to corrosion, impact, aging, abrasion, fire, and non-discoloration for 15 years in outdoor use, almost all products are manufactured in this way. For example, when you open the phone case, you can see the dense barcode label inside. Many label requirements can stand the test of time, no deformation for a long time, no fading, no wear due to contact with solvents, no discoloration due to high temperature, etc. Therefore, it is necessary to use a special material printing medium and printing materials to ensure these characteristics, generally Inkjet and laser printing technologies are not available.


  • Pad printing

    The pad printing process is a special printing technology that was transmitted to China in the 1980s. Because of its obvious advantages in printing on small-area and uneven-surface products, it makes up for the shortcomings of the screen printing process. In the early 1990s, with the further opening of the Chinese market, a large number of foreign-invested enterprises with traditional industries such as electronics, plastics, gifts, and toys entered the Chinese market one after another. Printing technology and screen printing technology as the main decoration methods were even more Extraordinary development, according to incomplete statistics, the application of printing technology and screen printing technology in the above industries reached 27%, 64%, 51%, 66%.


    Pad printing means that the substrate is an irregular shaped surface (such as instruments, electrical parts, toys, etc.), and a copper or steel gravure is used to cast a hemispherical print head through silicone rubber to press the layout. The way in which the ink is transferred to the substrate to complete the transfer printing.


    Pad printing machine for the industry:


    Plastics, toy industry, glass industry, metal industry, electronics industry, sporting goods, stationery industry, optical industry, IC packaging industry, etc


    Pad printing machine scope:

    Ruler, pen, ball, doll eye, watch, camera, hair dryer shell, ceramic, medical equipment, racket, audio tape, electronic parts, IC, CPU, DRAM, computer case, buttons, decorative signs, big brother's case, etc. .


    Generally speaking, the technical content of the printing process is not high. It is very difficult to continue to develop in the case of high production costs in developed countries, so the printing industry is transferred to developing countries with low labor costs like China. It is an inevitable trend. At present, in addition to a few companies that also manufacture high-precision printing production lines, most companies have moved their production bases to China.



  • types of paint drying
    The types of paint drying are as follows:

    1. Volatile drying (evaporation and drying with thinner); 2. Fusion drying (molecular and molecular volatilization resistance phase polymerization); 3. Oxidative drying (unsaturated fatty acids combined with oxygen in the air); 4. Drying by bridging reaction (hardening by bridging agent, so-called hardener to form bridging); Ultraviolet curing (unsaturated polyester-based additive is cured by molecular polymerization after irradiation with an ultraviolet wavelength of 300-400 nm).

    UV process introduction: UV coating can be applied by dip coating, shower coating, lacquer coating, spin coating, or even vacuum coating, and then cured by UV photon irradiation to form a film. Compared with general solvent-based coatings, the characteristics of UV coatings are as follows: 1. Fast curing speed, 2. Curing at room temperature, 3. Save energy, 4. Save floor space, 5. Does not pollute the environment, 6. Improve product performance.
  • How to fix the PCB

    How to fix our PCB:


    1: Our extrusion enclosure have slots for installation easierly.


    2: We could offer the rivet to fix.


    3: The stud nut could be taking into consideration.

  • Other plating

    Copper plating: The copper plating layer is pink, soft, has good ductility, electrical conductivity and thermal conductivity, and is easy to be polished. Appropriate chemical treatment can obtain decorative colors such as bronze, copper green, black and natural color. Copper plating is easy to lose its luster in the air. It reacts with carbon trioxide or chloride to form a layer of basic copper carbonate or copper chloride film on the surface. It is brown or black copper sulfide by the action of sulfide. Therefore, as a copper The decorative copper plating layer needs to be coated with an organic coating on the surface.


    Cadmium plating: Cadmium is a silvery white shiny soft metal. Its hardness is harder than tin, softer than zinc, good plasticity, easy to forge and crush. Cadmium is chemically similar to zinc, but does not dissolve in lye, dissolves in nitric acid and ammonium nitrate, and dissolves slowly in dilute sulfuric acid and dilute hydrochloric acid. Cadmium vapors and soluble cadmium salts are toxic and must be strictly prevented from cadmium contamination. Because cadmium contamination is very hazardous and expensive, galvanized or alloy coatings are often used to replace the cadmium-plated layer. At present, there are many types of cadmium plating solutions used in domestic production: cadmium plating with ammonia carboxyl complex, cadmium plating with acid sulfate, and cadmium plating with cyanide. In addition, there are pyrophosphate cadmium plating, alkaline triethanolamine cadmium plating and HEDP cadmium plating.


    Tin plating: Tin has a silver-white appearance with an atomic weight of 118.7, a density of 7.3 g/cm3, a melting point of 2320 C, and an valence of divalent and tetravalent, so that the electrochemical equivalents are 2.12 g/A.h and 1.107 g/A.h, respectively. Tin has the advantages of corrosion resistance, non-toxicity, easy iron welding, softness and good ductility. The tin plating has the following characteristics and uses: 1. High chemical stability; 2. In the electrochemical sequence, the standard potential of tin is positive, and for the steel is cathodic coating, the substrate can be effectively protected only when the coating has no pores; 3, tin conductivity is good, easy to weld; 4, tin from the beginning of -130C crystallization began to mutate, to -300C will be completely converted into a crystalline isoform, commonly known as "tin 瘟", at this time Completely lose the properties of tin; 5, tin and zinc, cadmium coating, can grow into whiskers under high temperature, humidity and airtight conditions, called long hair; 6, after tin plating, re-dissolve in hot oil above 2320C A glossy tin layer can be obtained, which can be used as a decorative coating for daily necessities.


    Electroplated single metal is also lead-plated, iron-plated, silver-plated, gold-plated, and the like. Electroplating alloys include: electroplated copper-based alloys, electroplated zinc-based alloys, cadmium-plated, indium-based alloys, electroplated lead-based, tin-based alloys, electroplated nickel-based, cobalt-based alloys, electroplated palladium-nickel alloys, etc. Composite plating includes: nickel-based composite plating, zinc-based composite plating, silver-based composite plating, and diamond inlaid composite plating.


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