API Refractory Personnel - API-936 模擬練習

A. Permanent linear change is determined with one 2 in. (50 mm) × 2 in. (50 mm) × 9 in. (230 mm) specimen.

B. Abrasion resistance is determined using two 4-1/2 in. (114 mm) × 4-1/2 in. (144 mm) × 1 in. (25 mm) specimens.

C. Density shall be determined using cubes or erosion plates and linear change bars.

D. Cold crush strength is determined using two 4-1/2 in. (144 mm) × 4-1/2 in. (114 mm) × 4-1/2 in. (114 mm) cubes.

A. Only when specified by the owner

B. Only when added in the field

C. Only when extra strength is required

D. For all monolithic hot face castable refractory materials

A. Mix times will be determined during the material qualification testing

B. Overfill will be removed until flush with the tops of the hexmetal

C. Water slicking of the lining surface is permitted

D. The refractory will be fully compacted in and around the anchor supports

A. C-133

B. C-113

C. C-417

D. C-704

A. 500°F to 700°F (260°C and 370°C)

B. 300°F to 500°F (150°C and 260°C)

C. 100°F to 300°F (38°C and 150°C)

D. 50°F to 100°F (10°C and 38°C)

A. samples are cut from the edge of the panels

B. dimensions are less than 18 in. (450 mm) * 18 in. (450 mm) * 4 in. (100 mm)

C. dimensions are greater than 18 in. (450 mm) * 18 in. (450 mm) * 4 in. (100 mm)

D. samples are cut with an abrasive medium

A. 3/4 in. (19 mm)

B. 1/2 in.(12 mm)

C. 3/8 in. (10 mm)

D. 1/4 in. (6 mm)

A. vibration method.

B. equipment.

C. means of vibrator attachment.

D. craftsman's ability to construct the forms.

A. 3

B. 5

C. 1

D. 12