เครื่องทดสอบความแข็งแบบตั้งโต๊ะชนิด Rockwell 900-331 (Phase ll)

เครื่องทดสอบความแข็งคือการระบุความแข็งของชิ้นงานทดสอบ โดยการวัดความลึกโดยกดทางเข้าของหัวเพชร หรือลูกบอลเหล็กเข้าไปในชิ้นงาน มันใช้งานง่ายและใช้กันอย่างแพร่หลายในซอฟท์, โลหะหนัก, โลหะที่ไม่ใช่เหล็ก, อโลหะ

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Model No. 900-331

This hardness tester comprises the very best in "state of the art" design along with dynamic precision only found at Phase II. The 900-331 Rockwell scale hardness tester is easy to operate, yet engineered to obtain highly sensitive and accurate readings. Conforming to ASTM E-18 Rockwell Hardness standards, the 900-331 tester will offer unmatched repeatability in all standard Rockwell Hardness scales (table shown below). A perfect, rugged performer suited for any environment including heat treat facilities, tool rooms, workshops, laboratories and inspection labs. Lifetime technical support is included on all Phase II Hardness Testers. So test away with confidence and a level of accuracy you will only find at Phase II.

Features:

Direct analog dial reading
Advanced design, easy to operate
Engineered to obtain highly sensitive and accurate readings
Conforms to ASTM E-18

Perfect for laboratories, workshops, tool rooms, inspection labs, etc.

Specifications:

Minor Load	10Kgf
Major Load	60Kgf, 100Kgf, 150Kgf
Test Force Application	Dead Weight
Test Force Control	Hydraulic Dashpot System
Results Display	Analog Dial Gage
Vertical Capacity	6.7 in.
Throat Depth	6.6 in.
Height	30.0 in.
Width	8.50 in.
Depth	20.0 in.
Shipping Weight	242 lbs.

Accessories:

C-scale Diamond Indentor
1/16" Ball Indentor
3- HRC Test Blocks
1- HRB Test Block
Test Table 5.87" (150mm)
Flat Anvil 2.5" (63mm)
Std. Vee Anvil
Accessory Case
Dust Cover

Options:

NIST/ASTM certified hardness test blocks, penetrators and kits are available.
This model is available with ASTM E18-08B or current certification

Scale Symbol	Indenter Type Ball dimensions indicate diameter	Preliminary Force N (kgf)	Total Force N (kgf)	Typical Application
A	Spheroconical Diamond	98.07 (10)	588.4 (60)	Cemented carbides, thin steel and shallow case hardened steel
B	Ball 1/16" (1.588mm)	98.07 (10)	980.7 (100)	Copper alloys, soft steels, alum. Alloys, malleable iron, etc.
C	Spheroconical Diamond	98.07 (10)	1471 (150)	Steel, hard cast irons,pearltic malleable iron, titanium, deep case hardened steel & other material harder than HRB 100
D	Spheroconical Diamond	98.07 (10)	980.7 (100	Thin steel and medium case hardened steel and pearlitic malleable iron
E	Ball - 1/8" (3.175mm)	98.07 (10)	980.7 (100	Cast iron, aluminum&magnesium alloys and bearing metals
F	Ball - 1/16" (1.588mm)	98.07 (10)	588.4 (60)	Annealed copper alloys, and thin soft sheet metals
G	Ball - 1/16" (1.588mm)	98.07 (10)	1471 (150)	Malleable irons, copper-nckel-zinc and cupronickel alloys
H	Ball - 1/8" (3.175mm)	98.07 (10)	588.4 (60)	Aluminum, zinc and lead
K	Ball - 1/8" (3.175mm)	98.07 (10)	1471 (150)	Bearing metals and other very soft or thin materials. Use smallest ball and heaviest load that does not give anvil effect
L	Ball - 1/4" (6.350mm)	98.07 (10)	588.4 (60)
M	Ball - 1/4" (6.350mm)	98.07 (10)	980.7 (100)
P	Ball - 1/4" (6.350mm)	98.07 (10)	1471 (150)
R	Ball - 1/2" (12.70mm)	98.07 (10)	588.4 (60)
S	Ball - 1/2" (12.70mm)	98.07 (10)	980.7 (100)
V	Ball - 1/2" (12.70mm)	98.07 (10)	1471 (150)