【正文】
: 印刷性: a. 粉末粒徑與鋼版的開口大小的相關(guān)性 b. 黏度及黏著指數(shù) (Thixotropy)與鋼版脫模的關(guān)連性 c. 黏度與溫度的關(guān)連性 2.、銲錫性: a. 活性劑的添加量 b. 活性劑的種類 (鹵素及有機酸 ) c. Reflow的溫度 3.、信賴性: a. 清洗或免清洗 b. SIR(表面絕緣阻抗 ) c. 活性劑的殘留量 表面黏著組裝實務(wù)之影響 印刷機 (PRINTER) MPM2023 MPM3000 MPM2023/3000印刷機 比較 General Board Handling Print Head Stencil Squeegee Vision system Program General Model Ultraprint 3000 HiE Ultraprint 2023 HiE Length (inches) 63 63 Width (inches) 63 46 Height (inches) 60 64 Automation Fully automatic Fully automatic Board Handling Model Ultraprint 3000 HiEUltraprint 2023 HiEMaximum size (inches) 22x20 20x16Minimum size (inches) 2x1 2x2Maximum thickness () Minimum thickness () Maximum warpage () Underside ponentclearance (inches) 1 Board held by Edge clamp, Vacuum Edge clamp, VacuumBoard supportMagic Blocks, Toolingpins, vacuum plateMagic Blocks, Toolingpins, vacuum plateConveyor Standard StandardBoard Movement R to L, L to R R to L, L to RDuallane board handling? NoNo Print Head Model Ultraprint 3000 HiEUltraprint 2023 HiEPrint area (inches) 18x16Maximum print stroke() 16Mdthod of registration Vision VisionOptical alignment? Yes YesAlignment accuracy (microns) Alignment repeatability(microns) 25 25Print ModesPrint/print, print/flood,flood/print, on contact, 1 or2 depositsPrint/print, print/flood,flood/print, on contactPrint speed (inches/second) 8 12Print pressure (pounds) to 65 1 to 60Snap off (print gap) (inches) to 1 to 1Is snapoff programmable? Yes YesCycle time (seconds) Single lane: Single lane: 11 Stencil Model Ultraprint 3000 HiEUltraprint 2023 HiEFrame size (inches) 29x29 29x29PCB stencil seperation speed(inches/second) to to Stencil cleaning Dry, wet, vacuum Dry, wet, vacuumProgrammable? Yes YesStencil Wiper Optional Optional Squeegee Model Ultraprint 3000 Hi E Ultraprint 2023 Hi ESqueegeesMetal, polyurethane, rheopumpMetal, polyurethane, rheopumpSqueegee pressure (pounds) 0 to 60 0 to 60Where measured? Software 10 x per second Software 10 x per