- Medium High Density Backup
FUNCTIONS :
(1) Prevent damage to the drilling rig table.
(2) Reduce the burr at the orifice.
(3) Reduce the wear or twist of the drill bit, and ensure that the drill bit has excellent chip removal ability and cleanliness.
PRODUCRT FEATURES:
1. The wood fiber material is hard, which can avoid the burr when drilling.
2. The source of raw materials is mainly 100% pure wood, which does not contain colloidal particles and other impurities that cause damage to the drill nozzle.
3. The board is sanded, and will not deviate from the hole, burn the hole and wear the drill nozzle due to thickness deviation.
PRODUCT PARAMETERS Unit (mm)
|
PRODUCT NAME |
MODEL |
INSTRUCTIONS |
STANDARD SIZE |
REMARK |
|
Medium /High Density Backup
|
HMH200 |
Thickness:2.0mm,2.5mm Thickness tolerance:±0.15mm Size tolerance:±2mm Warpage:<0.6%of diagonal Density:High Density Backup HDF≥850Kg/m³ Medium Density Backup MDF≥800Kg/m³ Hardness:High Density Backup HDF: 75±5.0(Shore-D) Medium Density Backup MDF: 70±5.0(Shore-D)
|
37"*49"； 41"*49"；43"*49"； Can be cut according to customer requirements.
|
2.0mm（High Density Backup） |
|
HMH250 |
2.5mm（High Density Backup） |
|||
|
HMM250 |
2.5mm（Medium Density Backup） |
USAGE METHOD:
① When drilling, it is placed under the PCB board, which can be used twice, and the front and back sides can be used once respectively.
② The drill needs to reserve a chip removal space of 10% to 20% of the effective edge length.
③ Before use, it must be ensured that there is no scratch, and the contact surface between the backing plate and the PCB board must be cleaned before the board is installed.
STORAGE CONDITIONS:
① The stretch film is fully covered and cannot be directly exposed to the air to isolate the contact between moisture and the board, and fiberboard is used to fix it around the card board to prevent the board from warping due to weight factors when stacking.
② The stacking height should not exceed three pallets.
③ In particularly humid weather, try to use it up within 12 hours after opening to prevent the board from warping deformed by moisture; if it cannot be used up, please re-pack it with stretch film.
④ Placed horizontally, the storage period of the original packaging is six months.The temperature: room temperature, humidity is≤65%.
