Crucible Data

CRUCIBLE DATA, DIMENSIONS & WORKING CAPACITIES

Pattern Number	Working Capacity - Brass (kg)	Height (mm)	Outside	Diameter	Zinc	Alum.	Silver	Gold	Brass	Bronze
			Top (mm)	Bottom (mm)	Kg	Kg	Kg	Kg	Kg	Kg
TPX173	115	510	310	235	98	37	145	266	115	112
A100	120	400	324	230	103	39	151	277	120	117
TPX1153	180	632	349	240	154	58	226	416	180	176
TPX58	375	810	418	255	321	121	472	867	375	366
TPX10	525	940	440	295	449	170	660	1213	525	512
Specific	Gravity				7.14	2.7	10.5	19.3	8.35 AVG	8.15 AVG
Melting	Temp.				420°C	660°C	960°C	1063°C	1250°CAVG	1150° to 1500°C

Working capacity of crucibles is calculated as 90% of the brimful when melting BRASS - Specific Gravity 8.35

TPX1153
TPX58
TPX10

TPX173

A100

MACHINE SCREW ACTIONJAC

The worm gear driven Machine Screw Jac incorporates an alloy steel worm, which drives a high tensile bronze worm gear, accurately machined to the high standards of the Nook Industries. The worm shaft is supported on anti-friction bearings with seals provided to prevent loss of lubrication. The housing is made of ductile iron* and proportioned to support the rated load of the unit.

The lifting screw is made of alloy steel with a minimum tensile strength of 95,000 pounds/square inch. These threads are precision formed to Class 2-C (Centralising) tolerance.

Stainless steel lifting screws can be provided on special order. Stainless Steel Machine Screw Jacs are also available.

The lead accuracy is less than .00075" per inch and Jacs can be matched to within +.002" per foot when ordered as matching sets.

Fabric-type protective boots or special spring steel protectors can be provided to protect the exposed portion of the lifting screw.

HOW TO GET THE BEST RESULT FROM YOUR CRUCIBLE

1. Handle with care and ensure no damage to glaze.

2. Do not stack one crucible inside another.

3. Keep dry at all times.

4. Install the crucible centrally in the furnace with correct distances between crucible and grip bricks (or top rings where applicable).

5. Heat crucible steadily to uniform red heat before charging.

6. Charge ingots or large pieces with great care and ensure they are not wedged in the crucible.

7. Melt the charge as quickly as possible.

8. Use the least quantity of fluxes and place in the crucible after some metal has melted.

9. Do not heat the metal to a higher temperature than is required.

10. Lifting tongs, when used, must fit the crucible correctly.

11. Pour the metal as soon as it is ready and recharge immediately.

12. Do not allow molten metal to solidify in the crucible.

13. Scrape out dross after each heat while it is still hot.

ACTUATOR MECHANISM FOR TILT OF FURNACE

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TABLE OF CONTENTS

Combustion & Chemical Engineering.
Copyright © 1998 [CCE]. All rights reserved.
Information in this document is subject to change without notice.
Other products and companies referred to herein are trademarks
or registered trademarks of their respective companies or mark
holders.

Information Request Form

Combustion & Chemical Engineering. Copyright © 1998 [CCE]. All rights reserved. Information in this document is subject to change without notice. Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.

Combustion & Chemical Engineering.
Copyright © 1998 [CCE]. All rights reserved.
Information in this document is subject to change without notice.
Other products and companies referred to herein are trademarks
or registered trademarks of their respective companies or mark
holders.