The CFD simulation does not consider the contact thermal resistance between the components of the heat sink; there is an error in the assembly process of the heat sink and the measurement accuracy of the thermocouple in the experiment. It can be said that the experimental data confirms the correctness of the simulation results within the error range of simulation and experiment. Therefore, experiments and theories have shown that the use of drainage holes has a significant improvement in the performance of the heat sink based on the chimney effect, that is, the heat dissipation is further reduced under the condition that the COBLED operating temperature has little influence (about 2 ° C). The weight of the radiator (the weight of the radiator example is reduced from 1157g to 1010g) improves the overall performance of the radiator. For the street lamp using COB-based semiconductor illumination source, the COBLED's illumination axis is 60° from the gravity direction [3], and the chimney-based finned-heatsink structure with drain holes is proposed and calculated by using Icepak. The fluid mechanics simulation software studied in detail the influence of the shape, size and distribution of the drainage holes on the quality factor Q of the radiator. The simulation results show that for a COBLED with a surface area of 4cm2 and a heat of 50W, at a maximum temperature of less than 52 °C, two chiseled holes with an area of 15 cm2 and a central symmetry of the light source will be formed on the heat conducting plate. The weight of the radiator is further reduced by 15%. The simulation results were verified by experiments. When the COBLED injection power is 80W, the weight of the heat sink is reduced from 1157g to 1010g compared with the traditional chimney-based heat sink. The COBLED substrate is relative to the ambient air. The temperature rise increased from 35 ° C to 37 ° C, which is basically consistent with the simulation results. The

[New weather after the year, aluminum forged bottom price. The lowest price in the whole network, all kinds of customized aluminum forging, 50% discount, wholesale and customized price, a small one-dimensional drawings to achieve a three-dimensional 3D aluminum forgings, where to set where, customers no longer have to worry about no supply and reserve price. What are you waiting for? The reserve price is known to you. You haven't asked if the inquiry is low. For details, please contact the official contact of China Aluminium Trading Co., Ltd. Tel: http://alu-forging.com Reference: Bicycle Aluminum Forging The processing technology of CNC machine tools has many similarities with the processing technology of ordinary machine tools, and the principles followed are basically the same. There are also many differences. The biggest difference is in the control of the cutting tool path. At the same time, because of the high degree of automation of CNC machine tools and the high cost of equipment, CNC machine tools have formed their own characteristics: 1. The process design of CNC machining is very specific. When using general-purpose machine tools, many specific process problems, such as the division and arrangement of steps in the process, the geometry of the tool, the path of the cutting tool and the amount of cutting, etc., to a large extent They are all considered and decided by the operating workers based on their own practical experience and habits. Generally, there is no need for the craftsman to make excessive regulations when designing the process rules. In the processing of numerically-controlled machine tools, the above-mentioned specific technological problems not only become the contents that must be considered when designing the numerical control process, but also must make correct choices and be incorporated into the processing program. 2. CNC machining process design is very strict Although C

Quality control is one of our promise to customer. We focus on providing the quality parts with reasonable price so all the customer can satisfied with the products and service we offer. For all the components and raw material, we perform incoming quality control to ensure all the item we received are good to use In-process quality control is our policy for all the metal parts since it's the best way to keep our quality as is during production and reduce the loss in production. Out-going quality control means before we ship out every parts or products, we will perform quality check to ensure what we are going to send out is qualified for our quality policy. Make sure all the item is sufficient for customer and able to use. For electronics assembly, we perform 100% check for every unit and also will do burning test especially for power supply, which guarantee all the power can sustain for stress test and every unit we ship out is working.

CNC (Computer Numerical Control machining) is a proven metal fabrication method that businesses use for numerous projects every day. Nearly anything that needs engineering or planned design most probably includes CNC machining in some way. All types of industries and businesses need massive and small metal and plastic components. These components can become part of anything right from automobiles to zoos. Instead of using machines and putting in many hours of labor, which can be pricey, CNC machines can automate these processes as the machine does the work. For example, software transfers the machining information to the CNC machine to generate the doors and window quickly and precisely, Scalability

Why CNC Machining so important? Technology progress year by year, the electronics and machine get improved every year. Apparently in some complicated design sheet metal parts can not cover all the purpose. The help of CNC service help to deliver custom, accurate and complicate design of parts that perfect fit for the products. No need for hard tooling make it easier and possible for small to medium quantity production, which help the need of prototype/trial run/design check for designer and cost less than hard tooling. Our service of CNC include: CNC machining ( miling and drilling) CNC turning (Auto Lathe) CNC punch (NCT Punch) CNC bending