Oct 29, 2020

High-frequency preheating machine is mainly used for the preheating of thermosetting materials such as melamine, urea plastic, epoxy resin, phenolic, melamine, etc. before molding. Advantage of Preheating: It can enhance the fluidity of materials, reduce harmful ingredients, and improve the surface gloss of products. Application: kitchenware, tableware, electronic components, integrated circuits, electrical appliances, and other industries. Shunhao Factory has many years of experience in the production of high-frequency preheating machines. During the production process, we continue to improve the machine performance which greatly enhances the self-protection ability of the machine in the use process, and makes the operation and maintenance more convenient and safe for operators! 1. Overcurrent Protection When the machine is in use, if the current is too large due to overload or sparking, the over-current protection device of the machine will automatically cut off the high-voltage power supply and open the upper cover to protect the oscillating tube from the impact of high current. Extend the service life of the oscillating tube! 2. Fan Protection Due to the large dust in the working environment of the high-frequency preheater, the blower that cools the electron tube is susceptible to dust accumulation, resulting in too small cooling air volume! When there is too much dust on the blower turbine or dust filter and the cooling air volume of the oscillating tube is not enough, the special fan protection device will automatically cut off the power of the whole machine to protect the oscillating tube, and the dust must be cleaned to work normally! 3. Dust Filter: Easy to Disassemble and Install The dust filter of Shunhao preheating machine is easy to be disassembled and installed easily without any tools which make the dust cleaning work easier and more convenient! 4. Special Filtering Device Some customers have feedback that when some high-frequency preheating machines are preheating materials, the high-frequency will interfere with the normal operation of the thermostat of the hydraulic machine, causing the temperature of the mold to be very different from the set temperature. Shunhao high frequency preheat machine is specially equipped with a filter device to make the thermostat of the hydraulic press machine works more stably without interference. 5. Security Protection When designing the machine, we have fully considered the personal safety of the operators. The safety performance of this machine is excellent. Operators never need to worry about the upper cover of the machine crushing their hands during operation. After starting the machine, when the upper cover touches obstacles, the protection device of this machine will automatically start, let the upper cover automatically rise to the original position, then the worker will be 100% safe! 6. Two-color Time can be switched at will This machine can provide a variety of preheating time settings. ...

Oct 23, 2020

Normally speaking, under normal operating conditions, the transformer of the melamine tableware press machine is not easy to burn out. Today, SHUNHAO Factory is sharing the following working experience to help the factory engineers to better repair the transformer of the melamine tableware machine. If the transformer of the hydraulic melamine machine does not work properly, please check the status of the transformer according to the following steps: 1. Check whether the three connection points on the upper left side of the transformer are correctly connected according to the correct instructions. For example, 380V voltage needs to connect 1 and 2 415V voltage needs to connect 0 and 2 2.If the connection point is correct but the machine still cannot run, check whether the input point of the transformer has a voltage of 380V or 415V (Figure 1). If there is no voltage output, it means that there is a problem with the Main power, please come to check the main power of your factory. Figure 1 3.If the transformer has a voltage input of 380V or 415V, then check whether the output point of the transformer has a voltage of 220V (Figure 2). If there is a 380V or 415V voltage input but no 220V output, it means that the transformer has been burned out and a new transformer needs to be replaced. Figure 2 4. If there is 220V output, continue to check whether the fuse connected to the output point is blown (Figure 3). If the fuse has blown, replace it with a new one. If the fuse is not blown, it means that this transformer is working normally, please proceed to troubleshoot other problems with the machine. Figure3 SHUNHAO Machinery Factory not only provides melamine crockery machines of qualified quality and updated technology but also has many years of mechanical service experience, which can provide you with the follow-up maintenance guarantee of the machine.

Oct 22, 2020

Today Shunhao is going to share with you the operation rules to ensure the safe operation of hydraulic press machine by factory operators. Safe Operating Procedures 1. The operator should be familiar with the performance and structure of the hydraulic press, and be certified for operation after training. 2. During the operation of the machine, the operator’s body is not allowed to enter the working space of the movable beam, and use tools to load and unload the working parts. 3. The operator must wear personal protective equipment before starting the machine. 4. Perform a pre-work inspection and check whether the various functions of the hydraulic press machine are normal. If there is a problem, it should be dealt with immediately before starting work: Check whether there is oil leakage in various oil pipes, manifold oil valves, oil cylinders, etc.; Check whether the movable beam is obviously sliding down and whether the staying position is correct; Check whether the photoelectric switch and emergency stop switch work flexibly; Check whether there is noise from the hydraulic press; Check whether the oil tank shows enough hydraulic oil; Check whether the piston of the oil cylinder is loose and whether the surface is lubricated with oil. 5. If two or more people are required to cooperate to operate, the front and rear operation switches must be turned on and the corresponding two-hand operation switches and emergency stop switches must be provided. 6. It is strictly forbidden to work beyond the maximum stroke of the movable beam(that is, not less than the minimum closed height of the hydraulic press). 7. When working with full load, the maximum allowable eccentricity of the concentrated load is 50MM, and it must not be overloaded or used beyond the maximum eccentricity. 8. Stop the automatic hydraulic press machine when inspecting the mold and use wooden blocks to support the movable beam. 9. All pressure regulating valves and travel switches must be adjusted with special tools and personnel. 10. The cooling system must be turned on before starting to ensure that the oil temperature does not exceed 60 degrees. 11. During work, pay close attention to whether the hydraulic machine is abnormal. Make sure the machine doesn’t work when it’s abnormal. 12. The melamine mold should be closed before stopping the machine, then stop the oil pump and turn off the power. 13. After finishing the work, clean the machine tool, clean the working area, and fill in the "Equipment Daily Maintenance Card"

Jul 21, 2020

Making molds from China, there are advantages till now: 1. Technology of manufacturing molds is acceptable, and even quite accurate or precise. To know there are many big tableware factories running in China and supplying to European countries or American countries. Do they make molds from Germany or other countries? No, in China only. 2. You know well, the molds from German or Japan or China Taiwan are very good quality, but also the cost is high, can not cover the competition at all. Molds making from China, still can make the profit for tableware factories and also improve their competition, due to its less cost than others. Now share the idea of how to choose the molds steel materials for melamine tableware or urea tableware: The steels normally using for compression molds in China: 718# steel / P20# steel / P45# steel and NAK80# steel (imported steel) To make the Urea tableware: urea tableware is cheap price, the factories need to save the cost from the powder / the molds, even the machines also run the manual model (In China, urea tableware factories only run the automatic molding machines). So, P20# (made-in-China) is popular using in urea tableware production. But the disadvantage is that: such molds making from P20# can not be very glossy. And steel quality is not 100% perfect, sometimes small holes coming from the steel factories, which maybe come out after some days or some months only for such steel problem. Shunhao molds factory workers change such molds steel and make new for clients when such holes coming out in molds factory. To check from the cost, urea tableware molds can choose P20# steel. To make the Melamine tableware: Melamine powder is harder than Urea molding compound, which requires the hard steel for molds. 718# steel is the most popular running in the melamine tableware factories. Cost of 718# steel China is lower than Germany P20# (made-in-Germany, P20# Germany need to pay for its high duty), but its hardness can bear the compression of the melamine molding compound. Tableware making from 718# steel molds is glossy and bright. Even 718# steel is a higher cost than P20# steel (China), but good for melamine tableware and improves its quality competition. P45# steel is using differently: A.Molds' 2 plates B.the testing items for tableware factory C.the ordered goods in a short time or one-time order only Shunhao molds factory has been served for more than 100 tableware factories till now, in and out of China, and still continues on the way to work with them. Shunhao molds factory designs new items to them, find the problem for them, or improve the production for them. Welcome anyone from melamine tableware factories to discuss with me (+86 15905996312), thank you!

Jul 13, 2020

The beautiful appearance of melamine tableware benefits from the application of decal paper. First, the decal paper will be dipped in glazing powder water and dried. After the first press, decal paper and glazing powder will be put on for the second press. Finally patterned melamine tableware finished. The decal paper used in melamine tableware must be dried twice: 1st drying: dry the ink on the paper after printing the pattern 2nd drying: dry the decal paper in the drying oven after brushed with glazing powder water. (It can be dried naturally, you can use the old oven, or you can use the automatic decal paper drying line. 1. If the factory has enough space and the temperature is high enough, we can do natural drying. The decal paper brushed with melamine glazing powder water will be clipped and then hang on the rope. However, natural drying takes up a lot of space, and has to prevent dust from getting on the wet decal paper, which takes a long time; 2. If the demand for decal paper in the factory is not large and the space is not large enough, we can use an old oven with two doors. It is convenient for workers to control the temperature of drying paper. 3. If the demand for decal paper is large, we can use the automatic drying line. It saves labor and time with high efficiency. In addition to the quality of paper and drying quality, the decal paper used in melamine tableware also has operational requirements for use on the molding machine. Technical guide tips: 1. To make good quality decals, it must be put in as soon as possible before bubbles appear on the surface of the product. If the mold is opened too early, the product is easy to stick to the upper mold; If the mold is opened too late, the decal and product has poor adhesion and is prone to defects. 2. The reason for the decal cracks on the product is that the mold closing speed is too fast or the surface of the tableware already had cracks. If you have any questions for the above tips, please check other related articles on Shunhao Machines and Moulds website, or call us +86 15905996312

Jul 07, 2020

The production of qualified melamine tableware requires not only high-quality raw material, qualified melamine crockery making machines, but also some technical support for production operation. More easily for the experienced production manager to get the high-quality melamine tableware. Shunhao factory provides professional guidance for tableware manufacturers by analyzing the causes of defective melamine products. Air Bubbles: short curing time, insufficient exhaust, overheated mold, uneven heating, insufficient pressure, high raw material preheat temperature（machine needed: melamine preheater）; Surface Cracks: insufficient pressure, poor fluidity of raw material, too slow mold closing, raw material dispersion, insufficient raw material; Holes Inside: insufficient exhaust, too fast mold closing, short curing time; Small Wrinkles: too fast mold closing under high pressure, high humidity of raw material; Stick to Mold: insufficient curing, low mold temperature, and unsmooth mold surface; Soft: curing time is too short and high humidity of raw material; Stain: high volatile content in raw material, too fast mold closing, insufficient exhaust, too high mold temperature; Splits: curing time is too long, high mold temperature; Discoloration: uneven heating, high molding temperature, poor raw material quality, short curing time.

Jul 02, 2020

The oil hydraulic press machine is using special hydraulic oil as a working medium and a hydraulic pump as a power source. It depends on the force of the oil pump to make hydraulic oil enter the cylinder and piston through the hydraulic line. There are several sets of mutually matched seals in the oil cylinder and the piston. The seals in various positions are different, but they all act as sealing, to prevent oil leak. Finally, the hydraulic oil is circulated in the oil tank through the Check-valve, to make cylinder and the piston work properly, so as to complete certain mechanical actions as a kind of machinery for productivity. What is the reason why the oil supply pressure of the hydraulic press is too low? When the engine throttle is fully open, the inlet oil pressure of the torque converter is lower than standard, which is caused by following reasons: • Low oil supply; • Oil pipe leak or block; • Excess oil flow to transmission; • Oil inlet or oil filter block; • Hydraulic pump damage; • Oil suction network improper installation; • Oil bubbling; •Oil-in &Oil-out valves cannot be closed / spring rigidity is reduced. ►Now How to solve the above-mentioned questions: • If the oil supply pressure of the hydraulic press is too low, check the oil level first; • If the oil level is lower than the minimum scale, replenish the oil; • If the oil level is normal, check the inlet and outlet pipes for leaks. Fix the oil leakage problem; • If the inlet and outlet pipes are well sealed, check the oil-in valve and oil-out valve; • If the oil-in valve and oil-out valve cannot be closed, remove them and check whether cracks or scars on the joint parts, whether the oil hole is blocked, whether the spring stiff enough, and solve the problem in time •If the pressure valve is normal, remove the oil pipe or filter to check; •If it is clogged, should clean and remove the sediment; •if the oil pipe is unblocked, the hydraulic pump should be checked, and replace the hydraulic pump if necessary; •If the hydraulic oil bubbles, check the installation of the Oil-Return pipe; •If the oil level of the oil-return pipe is lower than the oil tank, should recheck and install the oil-return pipe. How to Solve the Lack of Pressure when the Hydraulic Press Works? 1. Check the pressure of the relief valve. •If the pressure is not enough, adjust the pressure. •If it does not work after adjustment, replace it with a new relief valve. •If the problem continues, replace the plunger pump. 2. The pressure is normal; check the electromagnetic directional valve or the pressure relief valve. 3. Consider whether the filling valve is leaking. 4. Consider whether the cylinder has leakage. Shunhao Machines has been focusing on the manufacture of hydraulic machinery for 18 years and is committed to be the Top Brand of melamine tableware machinery in China, providing you with various high-quality hydraulic machines. We will serve you wholeheartedly and support more technical questions....

Jun 24, 2020

In hydraulic transmission, hydraulic oil is the working medium that transmits motion and power. It has been proved by practice that hydraulic system failures caused by hydraulic oil account for 75% of the entire hydraulic failure rate, so we must increase the degree of attention. For the newly-made hydraulic oil tank, we may concern how does the pollution cause? How can we effectively clean up? Causes of Pollution: There are many reasons for the pollution of newly-made oil tanks. 1. The pollutants mixed from the external environment are mainly air, dust, cotton yarn, water droplets, etc. 2. The contaminants that remain incompletely cleaned include iron filings, burrs, welding slag, rust, cotton yarn, grit, cleaning fluid, etc. 3. The contaminants generated during the installation process mainly include unclean hydraulic accessories, wearing gloves during installation, and not re-checking before closing the cover. Clean-up Measures: 1. The new hydraulic oil tank formed by welding shall be treated as follows before phosphating. Use a spatula to thoroughly remove the welding slag and weld nodules at the surrounding welds. Use a file to clean the burrs and burrs of the oil tank orifice and the connecting threaded orifices everywhere. Wipe all parts with a lint-free cloth and clean kerosene. Use compressed air to blow off the dust on the surface of the oil tank and the cleaned parts. If you need to install a gasket on the plane of the sealing cover, you must make the gasket in advance. 2. Clean the appearance of the oil tank after phosphating Use a spatula to clean the phosphating solution residues and particles on the inner surface of the oil tank. If there are rust spots, use the sand cloth to remove rust, and apply phosphating solution to the rust-removed parts, and clean the phosphating solution residue after 2 minutes. Clean kerosene with a lint-free cloth, clean the oil ports of the connecting threads everywhere and blow dry with compressed air, seal the oil port with a clean screw plug in time, and thoroughly scrub the inner surface of the tank with clean kerosene. Knead the dough with clean anti-wear hydraulic oil (L-HM46#), paste the welds, holes, corners and other parts of the surface one by one, and repeat the operation until the dough is free of impurities, fine dust and particles. Blow the inside of the oil tank thoroughly with compressed air, and apply clean L-HM46# anti-wear hydraulic oil (to prevent the inside of the oil tank from rusting). If the cleaned oil tank is not assembled for the time being, it should be covered immediately, and it can be sealed with a large tape. And put on the oil tank cap to prevent secondary pollution, and put it in a proper position to avoid knocking. The hydraulic melamine tableware molding machines made by Shunhao are Taiwan technology supported，if operated properly, maintained in an orderly way, can be durable operation and will be the best helper for the melamine tableware factories!