Stop Valves are closed by screwing a rubber gasket down onto a seat in the middle of the valve. Pros only use small versions that act as shutoff valves for fixtures such as sinks and toilets and outdoor sillcocks. Flow is inefficient because of the circuitous route the fluid (water, in most cases) has to follow. It's important to orient the valve in the right direction with the arrow (cast into the side of the valve) aligned with flow direction. That way, water flows against the bottom of the rubber gasket. If the valve is put in backward, the flow will force the gasket away from the top of the valve. Stop Valves, Shower Stop Valve, Water Stop Valves, Brass Stop Valve ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalve.com
Led lamp / lamp with the production process through the patch, plug-in, post-welding, testing, filling glue, assembly, commissioning, packaging and other eight major processes, the following is the introduction of each sub-process.
First, SMT (LED Mounter)
1. Material inspection ------------ check the amount of material, specifications, model, quality, performance meet the requirements of 2. Brush solder paste (red plastic) --------- solder paste thawing, mix well, steel net adjustment, solder paste printing, check paste surface evenly. Patch components (hand patch) ------ After the first small pieces of large pieces, pay attention to location, model, direction, polarity, uniformity 4. Inspection surface (QC) -------- no error parts, wrong pole, missed parts, misplaced, solder paste is evenly attached, and the components are level and aligned 5. Over-reflow ------ temperature, speed, put the board, the board, the board should take light, check the tin surface, maintenance machine 6. Executive tin surface (plastic surface) --------Implementation of tin, heap tin, less tin, false welding, oblique welding, desoldering, repair error repair, DIP (LED plug-in machine)
1. Cut the lamp foot ------ adjust the light slot, knife position, speed, sub-file, classification, clear label, machine grounding, pay attention to anti-static 2. Stickers ------ cover manual pad, screw hole position 3. Plug-in (manually insert the lamp) ------- pay attention to PCB direction, lamp color, polarity, position, pay attention to anti-static 4. Check the insert (QC) ------ no wrong direction, wrong position, wrong pole, wrong color, high and low light, pay attention to anti-static 5. Pallet on the -------- folder class positioning, pay attention to the direction, no oblique light, partial lights, high and low lights, clip lamp, pay attention to anti-static 6. Over wave soldering ------ adjusting temperature,
Through the above detailed discussions, we learn more about the important role of professional knowledge in modern society. Of course, due to space limitations, the introduction here is not exhaustive. If you want to know more about the door industry, The first information, please pay attention to our company's corporate website. Shenzhen Dak Optoelectronics Technology Co., Ltd. is a company that has been registered and registered by the national industrial and commercial department. Over the years, it has established long-term cooperative relationships and industry-standard enterprises with many companies with good credit and excellent services.
Shenzhen Dak Optoelectronics Technology Co., Ltd. Main Samsung Mounter, Mounter, Used Mounter, Panasonic Mounter, LED Mounter, SMT Accessories, Shenzhen Mounter, Reflow, Wave Soldering, SMT Peripherals Other products
LED display manufacturers SMT placement machine shop process
LED display manufacturers SMT placement machine shop process I recently went to Zhongshan Guzhen and Siu Lam, where the world's most famous LED industry, but also met many customers do not understand the LED industry's SMT workshop process, here I Introduce, hope to be able to invest a little bit to help LED industry customer.