ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ
The impact energy: 11mJ
Mass of impact body: 5.5g
Ball hardness: 1600HV
Ball diameter: 3mm
Material of the ball: tungsten carbide
Impact device diameter: 20mm
Impact device length: 147mm
Weight of the device: 75g
The maximum hardness: 940HV
Surface average roughness: Ra: 1.6μm
The minimum weight of specimen:
+ Direct measurement: 5kg
+ Stable support: 2kg
+ To compact coupling: 0.05kg
The minimum thickness of specimen:
+ Dense coupling: 3mm
+ The minimum depth of hardened layer: 0.8mm
Indentation size:
+ Test surface with the hardness of 300HV: Diameter: 0.54mm, Depth: 24μm
+ Test surface with the hardness of 600HV: Diameter: 0.45mm, Depth: 17μm
+ Test surface with the hardness of 800HV: Diameter: 0.35mm, Depth: 10μm
