S. S. KHARDEKAR INDIA PVT. LTD.
HOT TOPPING COMPOUND
INTRODUCTION :
ACEFEED-HTC is hot topping compound in Insulating and Exothermic type Anti-Piping Compounds.
ACEFEED-HTC when added on the surface of liquid metal, expands & burns immediately and forms an insulating and porous crust which minimizes heat loss due to radiation. It helps to keep the metal in liquid state for longer time so that feeding efficiency of the riser is increased. The cooling rate of liquid metal in the riser is prolonged due to high insulation properties of the Hot Topping Compounds.
ACEFEED-HTC keeps metal more hot in riser area for a long time for efficient feeding & minimizes casting rejection due to shrinkage, porosity & piping etc. and produces sound and pressure tight castings.
TYPES OF ACEFEED-HTC :
A) EXOTHERMIC TYPE (NON EXPANDING TYPE):
- ACEFEED-HTC-NE-HI: It is a thermit type anti-piping compound and highly sensitive to heat. Non-carbonaceous material Forms a hard crust. High heat output. It is recommended for C. I. castings up to 6″ I.D. risers.
- ACEFEED-HTC-NE-HE: It is thermit type anti-piping compound and highly exothermic. It burns intensively and forms a hard crust when comes in contact with the liquid metal. Presence of Non-carbonaceous material forms a hard crust. It is recommended for steel castings above 4″-5″ I.D. risers.
B) EXOTHERMIC TYPE (EXPANDING TYPE):
- ACEFEED-HTC-E-HI: It is moderate exothermic but highly insulating type and have expanding properties. When it comes in contact with liquid metal, it forms a soft crust which is brittle in nature. The crust can be skimmed of easily from the riser head. It has excellent flowable properties and spreads evenly on the liquid surface and stops heat losses due to radiation. This product is recommended for steel casting risers from 6″-12″ I.D. It is also ideally used along with insulating hot tops for the production of steel ingots. It has very low fume level.
- ACEFEED-HTC-E-HE: It is Highly exothermic and more expandable. When it comes in contact with liquid metal gets swelled and acts as an insulating cover to avoid heat loss due to radiation. It spreads evenly on the liquid surface. Formation of fumes are very low. Addition rate is very small as it has good expanding properties.
This product is recommended to be used along with Insulating Hot Tops & Sleeve for the production of castings & Stainless Steel Ingots. (Sleeves size upto 6” ID & Stainless Steel Ingots 200-600 Kg)
BENEFITS :
- 1. Easy application & addition.
- 2. Rejection due to shrinkage cavities completely avoided.
- 3. ACEFEED -HTC do not add any impurities in the riser metal.
- 4. Riser heads can be safely remelted.
- 5. Economically viable.
- 6. Effective feeding.
- 7. No obnoxious fumes.
ADDITION RATE OF ACEFEED-HTC-E-HE :
|
Dia. Of sleeve/ Riser (mm) |
Weight (gms) |
Dia. Of sleeve/ Riser |
Weight (Kg) |
|---|---|---|---|
|
60 |
20-25 |
350 (14”) |
3.2- 3.4 |
|
70 |
25-30 |
375 (15”) |
4.0-4.2 |
|
80 |
45-50 |
400 (16”) |
4.6-4.8 |
|
90 |
65-70 |
425 (17”) |
5.8-6.0 |
|
100 (4”) |
90-100 |
450 (18”) |
6.8-7.0 |
|
125 (5”) |
160-180 |
475 (19”) |
8.0-8.2 |
|
150 (6”) |
320-340 |
500 (20”) |
9.4-9.6 |
|
180 (7”) |
525-550 |
525 (21”) |
10.8-11.0 |
|
200 (8”) |
575-600 |
550 (22”) |
12.5-12.7 |
|
225 (9”) |
850-875 |
575 (23”) |
14.2-14.4 |
|
250 (10”) |
1200-1250 |
600 (24”) |
16.2-16.4 |