Jun 11, 2021

718 mold steel is currently the most widely used typical steel grade for general-purpose plastic mold steel. It is often referred to as "advanced plastic mold steel, and the newly developed new steel grades often use it as a typical comparison. 718 mold steel has better harden ability and superior performance, so it can produce large-sized and high-grade plastic mold forming parts. Characteristics Used for large-scale long-life plastic injection molds, such as molds for home appliances, computer casings, etc. Blow molds for plastic products with high surface finish can be used as slider forming tools in plastic molds due to their high hardness; mold parts that can be flame hardened or nitrided depending on production needs. Typical Application examples Pattern plates for large molds, household appliances with high surface requirements. Suitable for large mirror plastic molds, such as automobiles, home appliances, audio and video products, etc. It can be used for plastic molds with mirror polishing requirements, and is suitable for injection molds and blow molds of PA, POM, PS, PE, PP, ABS plastics. Highly polished and demanding mold cavity. Hardened Treatment In order to increase the mold life to more than 800,000 mold times, the hardening method of quenching and low temperature tempering can be implemented on the pre-hardened steel.  When quenching, preheat it at 500-600℃ for 2-4 hours, then keep it at 850-880℃ for a certain period of time (at least 2 hours), put it in oil and cool to 50-100℃ and air cooling, the hardness can reach 50 after quenching -52HRC, in order to prevent cracking, 200℃ low temperature tempering treatment should be carried out immediately, after tempering, the hardness can be maintained above 48HRC Nitriding Treatment Nitriding treatment can obtain high-hardness surface layer structure. The surface layer hardness after nitriding can reach 650-700HV (57-60HRC). The mold life can reach more than 1 million times. The nitriding layer has the characteristics of dense structure, smoothness, and mold release. The corrosion resistance of humid air and lye is improved. In the article “What Steel is Used for Melamine Moulds?"，we know that 718 mold steel can be used to make melamine compression molds. It is the most popular type of steel used in melamine tableware factories. The tableware mold made of 718# steel is bright and shiny, and the melamine products produced are of high quality and competitiveness. Shunhao Mould Factory has served more than 100 tableware factories home and abroad, and will continue to cooperate with them. If you have a new product design, or you want to improve your production, you can contact us. Contact Info: Mobile: +86 15905996312 Email: machine@hongancn.com

May 18, 2021

High-frequency preheating is a very critical step before melamine compression molding. Preheating can enhance the fluidity of the material, reduce harmful ingredients, and improve the surface gloss of the molded product. In order to ensure the effective work of the preheating machine, Shunhao Factory collects several precautions for operators to follow during high-frequency operations. 1. The machine needs to be installed with a well-contacted grounding wire instead of the poor-quality grounding wire. 2. Do not place the high-frequency preheating machine in a humid and dusty environment. 3. The vacuum tube of the machine will generate extremely high heat during the entire working process. Therefore, please do not place the machine in a high-heat environment, and it is best not to place it in a place where it can be directly exposed to sunlight. This allows the vacuum tube to maintain a normal heat dissipation function. 4. The machine needs to be preheated before operation. Therefore, if the machine is off for more than one hour, it must wait for 10-15 minutes after it is turned on again. Otherwise, the service life of the vacuum tube will be greatly reduced. 5. The upper and lower extremes of the machine must not be directly touched together, and insulating objects should be placed in them, otherwise the machine may be damaged. 6. During high-frequency output, don’t use multimeter, test meter, or other low-frequency, low-voltage instruments, as this may cause accidents. 7. Check the high-frequency machine regularly to see if there is any burnout, damage, or breakdown. 8. If sparks frequently occur in the machine, it needs to be repaired in time. In order to avoid minor problems that may affect other components. 9. Make sure there is not too much water and dust in the preheating material, or it will bring damage to the machine. 10. After the machine is powered on, make sure the cooling fan of the vacuum tube works normally.

Apr 15, 2021

The maintenance of compression mold can greatly extend the service life of the mold. After the new-made melamine press mold arrives at the tableware factory, white wax can be used to clean the mold to reduce product jams on the mold and reduce the occurrence of defective products. Look at the video“What is the White Wax Using for Melamine Moulds？” to get a clear idea. During normal production, it is usually necessary to check the surface of the mold regularly. During the curing process, all molds will be slightly affected by heat. Excess flashes and some dust powder will accumulate on the mold, and an air gun can be used to blow the debris out of the mold surface. If there is no air gun, please wipe it carefully with a soft cloth. Mold Storage You can store the mold with the cavity face down to prevent dust from accumulating in the mold. In all, the correct storage and maintenance procedures should be followed, then the mold will have a longer use, and the rejection rate of the product will be minimized. This is a beneficial experience shared by Shunhao Moulds Factory, which is convenient for customers to improve the utilization rate of melamine tableware moulds. If you have other questions about melamine crockery molds, please call for a consultation. Tel: +86 15905996312

Mar 26, 2021

The chiller is generally installed on the oil return line of the system. Large hydraulic machines or hydraulic systems with severe heat are usually installed with a separate cooling system, and the chiller is the core component of the cooling system. The main function of the chiller: To maintain the heat balance of the hydraulic system Keep its system temperature within the specified range Prevent the hydraulic press from overheating and causing component damage. Then, what is the reason and how to deal with the problem when the chiller of the hydraulic molding press machine fails to cool down? The main reason for the failure of the cooling performance of the hydraulic machine chiller The chiller is blocked and the deposits stay on the wall of the cooling pipe, forming hard blocks and pipe domains so that the heat dissipation and heat exchange functions are reduced. Insufficient cooling water of the hydraulic press machine, the air accumulation in water and oil cavity of the chiller will also cause the heat dissipation and cooling performance to decline. Internal Chiller The solution to the decline in the cooling performance of the hydraulic melamine molding machine chiller First, adopt a cooling structure that is difficult to block and easy to clean from the design. At present, it seems that there are not many solutions. When selecting the cooling capacity of the chiller, the practice should be adopted as much as possible. According to the basis, and leave a large room; use mechanical or chemical methods when necessary. Increase the water intake or use lower temperature water for cooling Unscrew the screw plug to the exhaust Clean the internal and external surface areas of the hydraulic machine Shunhao Factory adopts an internal chiller with long service life and the outside cooling tower with a reasonable structure.  CLICK for MORE DETAILS: Introduction to the Cooling System of Shunhao Hydraulic Press Machine

Feb 24, 2021

Maintenance is very important for plastic molds. It directly affects the service life of the mold. Benefits: Good maintenance can not only greatly increase the service life of the mold, but also reduce production costs and ensure product quality. The following are some steps for plastic mould maintenance. 1. Plastic molds must be observed at times, checked regularly, scrubbed timely, and the molds must be refueled and maintained regularly. 2. Pay attention to the maintenance before and after use, so as to ensure the flexibility of the sliding parts, prevent seizure due to tightness, and even scrap mold. 3. Regularly check whether the water path of the plastic mold is unblocked to prevent the mold from overheating due to water path failure. Make sure all the fastening screws are tightened, the foreign objects, oil stains are cleaned up. Shunhao Machines & Moulds Factory produces melamine crockery molds, which are die-casting molds. However, we found that many of our customers also produce plastic products by using injection molding equipment, injection molds, etc. The article we share today is about how to maintain injection plastic molds. If necessary, you can refer to it! By the way, welcome to inquire about the price and delivery time of melamine tableware molds if needed! Shunhao Factory has more than 18 years of experience in melamine machines and compression molds manufacturing. It has a professional technical design team and engineer team in researching, developing and making moulds to ensure the quality and service life of the mold. If you want to develop and produce melamine products, Shunhao is a very trustworthy partner.

Feb 08, 2021

The melamine crockery compress machine is widely used to make different patterns single and colorful melamine tableware. Melamine tableware machine is controlled by PLC + computer screen, which is easy to operate and is an essential part of automatic production. However, after a long time running, the machine’s working performance will be significantly reduced, so how do we do a basic maintenance for the hydraulic melamine compression machine? Oil Circuit Check whether there is oil leakage in various parts of the oil circuit, and deal with it in time. Prevent the piston rod from scratching and oil deterioration. Electric Circuit Pay attention to the cleaning of the circuit board, regularly clean the dust of the strong and weak electric boxes, keep the electric boxes dry and prevent moisture. Other precautions It is recommended to replace the hydraulic oil once a year and clean the oil sludge in the oil tank. The water chiller should be cleaned in time to prevent the oil temperature from rising and accelerating the aging of the oil. Machine warning lights must be checked for normal operation during maintenance. Machine parts Check whether the transmission part of the machine is worn or not。 Check whether each grease nipple is blocked, and inject grease. The above is the maintenance details for melamine forming machine. Hope it’s helpful to you. Welcome to contact us for any problems about melamine machine and mould. Contact Info: Mobile: +86 15905996312 Email: machine@hongancn.com

Dec 15, 2020

The role of high-frequency preheater in the production of melamine products cannot be underestimated. After being heated by a high-frequency preheater, it has lots of advantages: enhance the fluidity of the melamine powder shorten the casting time eliminate product water lines improve the finish of the finished product save the amount of melamine powder extend the life of the mold So how to operate the preheating machine? First, let’s get to know the control panel of the preheater. Control panel introduction: A1=CURRENT METER                                    PL1=PILOT LIGHT OF POWER (GREEN) PB2=HIGH FREQUENCY START                      S2=HIGH VOLTAGE SWITCH PL2=H.F.PILOT LIGHT (RED)                         PB1=HIGH FREQUENCY STOP T1=HIGH FREQUENCY TIMER                      NB1=NON-FUSE BREAKER S1=HIGH VOLTAGE ADJUSTER Next, Shunhao will take you through the specific operation steps. 1. Open the preheater electromechanical gate, and the power supply is 380V. 2. Turn on the power switch of the preheater, the power indicator is on, and warm up for 5-10 minutes. 3. Set the high frequency switch to "ON". 4. Set "heating time" and "heating temperature". 5. Put the melamine powder in a special container and press the "High Frequency Start" button. The heating indicator will light up, and the processed object will begin to preheat. 6. When the temperature reaches the set value, the high frequency will stop working and the preheater will automatically open. 7. In normal work, if an abnormality is found, it should be shut down and stopped immediately, and reported to relevant personnel for handling. TIPS：For safety: Please do switch off the power of the machine, during checking or maintenance when needed. And keep the side door closed during its running.

Nov 13, 2020

The most important part of preheater machine is the tube. Before shipment, the tube and the machine will be carefully packed separately. For goods safety, Shunhao machines use wooden box sealed packaging, 100% protection of the machine from moisture and collision. After customers received the machine, our professional engineer worker will help to install the tube back. Let’s look at the video first to get a general idea. Installation Steps: 1. Take out the glass and place the Canon tube back carefully. 2. Connect other wires or coils with their right place tightly. Key note: Toshiba Japan Tube has been changed the name on the 1st.Nov.2018, now the new name is Canon Tube. This is the heart key part of the preheater machine. Preheater machine is mostly used for melamine moulding compound preheating process. Machine Parameters: No Content. HGY-520 HGY-720 HGY-1020 1 Output 5KW 7KW 10KW 2 Power Source 3Φ220V 380V 415V 3Φ220V 380V 415V 3Φ220V 380V 415V 3 Power Input 11KVA 13KVA 20KVA 4 Oscillation Frequency 62MHZ 62MHZ 27MHZ 5 Vacuum Tube 7T699RB E3069RB 8T85RB 6 Voltage Switching 3-stage 3-stage 3-stage 7 Time 999.9S 8 Preheating Power 110℃ Within 60 secs 9 Phenolic Resin 1200gr 1500gr 6500gr 10 Melamine Moulding Compound 1000gr 1200gr 6000gr 11 Urea Moulding Compound 1000gr 1500gr 6000gr 12 Electrode Size 310×360m/m 340×380m/m 450×560m/m 13 Electrode Spacing 30-70m/m 30-70m/m 35-60m/m 14 Machine Dimensions (L W H) 850×600×1520 850×600×1520 1150×820×1720 15 Machine Weight 260kgs 320kgs 600kgs Preheater machine has different models: 3KW is very small, few using in the melamine industry 5KW is using normally, to work with 150 tons-250 tons machine, powder capacity upto 1000grams 7KW is similar to 5KW model, but its capacity is bigger, powder capacity upto 1200grams. 10KW is used for big pressure of melamine molding machine, from 300tons -800tons, powder capacity upto 6000 grams For urea toilet seat cover molding machine,10 KW preheating machine is recommended