Exothermic Insulating Riser Sleeve-cylindrical/straight

Highly insulating and exothermic feeder sleeve for iron and steel castings.

The exothermic riser sleeves are manufactured with quality materials and engineered for maximum performance and safety with minimum risk. It offers three levels of exothermic riser sleeves: a mild exothermic sleeve for when the metal needs to stay liquid longer, and a high exothermic product that adds heat to the metal for better feeding efficiency. Exochem also offers an exothermic sleeve for manganese steel.

The Riser sleeve product with its low density, high strength, and good toughness is suitable for various grades of cast steel, cast iron, and alloy castings, as well as various molding processes.

We offer many types of insulating and exothermic riser sleeve formulations and geometries to meet your specific metal type, modulus requirements, molding application and riser removal needs. Exothermic hot toppings, riser covers and exothermic cores help to maximize the feeding performance of your risers.

Overview of Exothermic Insulating Riser Sleeve

The product adopts new materials such as exothermic agent, insulation materials and binder to develop high-efficiency Exothermic Insulating Riser Sleeves.

Our Exothermic Insulating Riser Sleeves according to different shapes are divided into oval, neck-down, cylindrical, side type, flexible board and core-shot sleeves (Mainly used for small to medium iron and steel castings)

Cylindrical, neck-down and side sleeves shall also be provided with riser caps because you may choose the type of risers as you need: open riser or blind riser.

With low density and precise dimensions, core-shot sleeves(AN series) can be used in various ferrous and non-ferrous metal castings. And it can be set on the molding plate or embedded in the mould after molding.

Heating mechanism

The exothermic insulating riser sleeves adopt high-quality insulation material and high-efficiency exothermic agent. The rapid cooling effect is very small. Once the molten steel is injected into the riser sleeve, the heating reaction is excited, and the riser sleeve will heat it greatly. After the heating reaction ends, the riser sleeve insulation material begins to work, ensuring that the solidification time of the molten metal in the riser is effectively extended.It has the functions of heat insulation at first, generating heat in the middle, and heat preservation for a long time at the end to achieve the best feeding effect.

Specification of ZT-Series Cylindrical Riser Sleeves

No. Specification

(d×h)

Effective Module

(cm)

Geometric Module

(cm)

Boundary Dimension (cm) Volume(ml)
d D H
ZT01 Φ90×120 2.15 1.50 90 120 120 399
ZT02 Φ100×125 2.50 1.75 100 130 125 481
ZT03 Φ110×140 2.86 2.00 110 140 140 703
ZT04 Φ120×145 3.15 2.20 120 155 145 881
ZT05 Φ130×155 3.51 2.54 130 165 155 1282
ZT06 Φ140×140 3.86 2.70 140 175 140 1602
ZT1 Φ150×150 3.58 2.50 150 195 150 2649
ZT2 Φ180×180 4.29 3.00 180 230 180 4578
ZT3 Φ200×200 4.77 3.33 200 250 200 6280
ZT4 Φ225×225 5.36 3.75 225 275 225 8942
ZT5 Φ250×250 6.04 4.17 250 305 250 12266
ZT6 Φ275×275 6.65 4.58 275 330 275 16326
ZT7 Φ300×300 7.25 5.00 300 360 300 21195
ZT8 Φ325×163 5.90 4.07 325 385 163 13515
ZT9 Φ325×325 7.85 5.42 325 385 325 26948
ZT10 Φ350×175 6.13 4.38 350 415 175 16828
ZT11 Φ350×350 8.17 5.85 350 415 350 33657
ZT12 Φ375×188 6.57 4.69 375 440 188 20753
ZT13 Φ375×375 8.75 6.25 375 440 375 41396
ZT14 Φ400×200 7.00 5.00 400 465 200 25120
ZT15 Φ400×400 9.33 6.67 400 465 400 50240
ZT16 Φ450×150 6.21 4.50 450 515 150 23844
ZT17 Φ450×300 8.87 6.43 450 515 300 47689
ZT18 Φ450×450 10.35 7.50 450 515 450 71553
ZT19 Φ500×167 6.71 5.01 500 565 167 32774
ZT20 Φ500×334 9.58 7.15 500 565 334 65548
ZT21 Φ500×500 11.17 8.33 500 565 500 98123
ZT22 Φ500×184 7.28 5.51 550 620 184 43693
ZT23 Φ550×368 10.39 7.87 550 620 368 87386
ZT24 Φ550×550 12.10 9.17 550 620 550 130604
ZT25 Φ600×200 7.80 6.00 600 670 200 56520
ZT26 Φ600×400 11.14 8.57 600 670 400 113040
ZT27 Φ600×600 13.0 10.00 600 670 600 169560

Advantages of HuaGuang’s Exothermic Insulating Riser Sleeves

The solidification time is 2.55-2.9 times longer than that of the sand riser, the molten metal used for feeding is reduced by 50-70%, and the product yield is increased by 25-30%. When the processing technology is used on the top riser, the contact area between the riser and the castings is reduced. Compared with the ordinary sand riser, the cutting and grinding areas are reduced by 60-70%, which greatly reduces the fettling costs, thereby reducing the production costs.

The use of the exothermic insulating riser shall eliminate the shrinkage defects that can’t be overcome by sand risers. Using automatic molding lines ensures the production of stable castings. Due to its exothermic properties, it can be used on cold risers to simplify runner systems, which is particularly beneficial for ductile iron parts.

Characteristics

Compared with the ordinary sand riser, the strength of the riser is increased by 50-70%. Advantages such as Less damage during modeling, good air permeability, uniform riser sleeve wall thickness and a V-shaped cone on the top of blind riser shall improve the heat insulation and feeding effect, and at the same time make the riser sleeve heat and thermal insulation properties and physical properties more stable.

Fiber composite insulating riser sleeve

The main features of the Fiber Composite Insulating Riser Sleeve are lightweight, high fire-resistant, small high-temperature linear shrinkage, high show porosity, small heat loss rate, and good thermal insulation performance. After use, not only the shrinkage and dispersed shrinkage inside the casting are eliminated, and the quality of the casting is improved, but also the efficiency of the riser feeding is significantly increased, the amount of molten steel in the riser is reduced, the actual yield of the casting is increased and the cost is decreased. It has been widely used in castings including cast steel, cast iron, and non-ferrous alloys, etc.