3003 aluminum plate is an AL-Mn alloy, usually cold working method is used to improve its mechanical properties, and it has high plasticity in the annealed state; it has good forming processing characteristics, high corrosion resistance, good weldability and electrical and thermal conductivity. ; Due to its good electrical and thermal conductivity, 3003 PCB aluminum plate can be used for ordinary circuit board drilling.
PCB drilling is a process of PCB pattern making, and it is also a very important step. The main purpose is to make holes for the board, in order to provide electrical connection and the function of fixing or positioning the device. Drilling is to connect the outer layer circuit with the inner layer circuit, and the outer layer circuit is connected with the outer layer circuit. Make connections between layers.
Specifications of 3003 H18 H19 aluminium drilling entry sheet
* Alloy: 3003
* Temper: H18, H19
* Thickness: 0.12~0.25mm
* Width*Length: 790~1300mm or produced by Coiled
* Standing specifications (specification):
1041mm x 1092mm, 940mm x 1244mm, 1041mm x 1244mm, 1092mm x1244mm, etc.
Chemical composition and mechanical properties of 3003 H18 H19 aluminium drilling entry sheet
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Ni | Zn | V | Ti | Zr | Other | AL | |
| single | total | |||||||||||||
| 3003 | 0.6 | 0.7 |
0.05 -0.20 |
1.0 -1.5 |
- | - | - | 0.10 | - | - | - | 0.05 | 0.15 | Remainder |
| Alloy | Temper |
Thickness (mm) |
Mechanical properties | |||
| Tensile Strength（Mpa） |
Yield strength （Mpa） |
Elongation (%) |
||||
| standard value | standard value | A | A50mm | |||
| Not less than | ||||||
| 3003 | H18 | 0.12-0.20 | 190 | -- | -- | 1 |
| 0.20-0.25 | 190 | 170 | -- | 1 | ||
| H19 | 0.12-0.20 | 210 | -- | -- | 1 | |
| 0.20-0.25 | 210 | 180 | -- | 1 | ||
Effects of the PCB entry sheets for drilling:
1. Protect the surface of the copper clad copper plate, or the conductive layer of the copper substrate to prevent the presser foot from pressing the plate;
2. Fix the drill bit to reduce the drift range and offset of the drill bit, so that the drill bit can be positioned accurately; improve the hole accuracy and prevent the drill from breaking;
3. Prevent the holes on the substrate from being burned;
4. Help the drill to heat up and reduce the temperature of the drill; groove; prevent oil stains; to reduce wear and tear of the drill bit.
5. The performance requirements of the drilling inlet plate are: soft enough; small thickness tolerance; flat and not easy to deform; high temperature; low hygroscopicity; surface free of impurities, foreign bodies, obvious defects, etc.
