6.Viscosity of glue
Viscosity of glue directly affects the quality of dispensing. If the viscosity is high, the adhesive point will become smaller, even wire drawing; if the viscosity is low, the adhesive point will become larger, and then the pad may be stained. In the process of dispensing, we should select reasonable back pressure and dispensing speed for different viscosity glue.
7. Curing temperature curve
For the curing of glue, the temperature curve has been given by the general manufacturer. In practice, higher temperature should be used as far as possible to make the glue strong enough after curing.
Glue must not have bubbles. A small amount of air will result in many pads without glue; every time the rubber pipe is replaced in the middle, the air at the joint should be emptied to prevent air beating.
For the adjustment of the above parameters, it should be in a point-to-surface manner. The change of any parameter will affect other aspects. At the same time, the defect may be caused by many aspects. The possible factors should be checked and eliminated one by one. In short, in production, we should adjust the parameters according to the actual situation, not only to ensure the quality of production, but also to improve production efficiency.(Printed Wiring Assembly)
Our Company is UL,ISO9001,ROHS and GJB9001B certified.
Packing and Shipping:
1. How to Get a quotation?
For PCBs,pls send us the Gerber File.For PCBA,pls send us the Gerber file and BOM(Bill of Materials)
2. What is the MOQ?
No MOQ.1 pcs is ok.
3.What is the lead time?
For PCB orders,the lead time is 2 to 10 days.For PCBA orders,the lead time will be 15 to 30 days.
4.Will the boards be tested before shippment?
Yes,all PCBs will be tested by Flying Probe or E-test.For PCBA,we will have AOI,X-ray,and functional test