A-type Thermal-Efficient Riser Sleeve for Iron Casting
SEFU’s A-type riser sleeves optimize feeding efficiency in high-volume castings, minimizing shrinkage and porosity through controlled cooling. Designed for cast iron components, these sleeves reduce fettling time and prevent failures in critical industrial processes.
- Good strength
- High refractoriness
- Dimensional accuracy
- Thermal insulation
- Good heat-insulating property
- Reduce the cleaning cost
- Description
- Product Specifications
- Factory Pictures
The A-type riser sleeves are high-pressure, low-density feeder systems designed to improve the quality of the cast iron molding. They are made from a composition of thermites, flux, and refractory materials – enhances their exothermic reactions. Designed for optimal thermal retention, these feeders extend the feeding distance beyond conventional sand mold exothermic sleeves. Insulation materials used in A-type sleeves minimize heat loss from the molten metal, reducing the likelihood of defects such as cold shuts and ensuring high-quality casting.
| Specification/Model (du*H) |
Effective modulus (cm) |
Riser size (mm) | Volume (CC) | |||||
| du | Du | do | Do | h | H | |||
| A2/5 | 0.70 | 24.0 | 40.0 | 22.0 | 37.5 | 40.0 | 49.0 | 20 |
| A3.5/5 | 1.00 | 35.0 | 52.5 | 30.5 | 49.0 | 39.0 | 49.0 | 30 |
| A4/6 | 1.10 | 37.5 | 56.0 | 32.0 | 54.0 | 54.0 | 65.0 | 50 |
| A4/7 | 1.20 | 41.5 | 62.5 | 35.5 | 59.0 | 63.0 | 71.5 | 70 |
| A4.4/9 | 1.35 | 44.0 | 59.0 | 41.0 | 56.0 | 80.5 | 90.0 | 110 |
| A5/8 | 1.50 | 52.0 | 73.5 | 48.0 | 70.0 | 70.0 | 80.0 | 130 |
| A5/8X | 1.50 | 52.0 | 73.5 | 48.0 | 70.0 | 70.0 | 80.0 | 130 |
| A5/10 | 1.70 | 58.0 | 84.0 | 48.0 | 76.0 | 94.0 | 107.0 | 200 |
| A6/9 | 1.70 | 57.5 | 80.0 | 52.5 | 76.0 | 78.5 | 91.0 | 180 |
| A7/10 | 2.00 | 69.5 | 94.0 | 65.0 | 89.5 | 87.0 | 99.0 | 300 |
| A8/11 | 2.25 | 79.0 | 102.0 | 71.5 | 99.0 | 96.5 | 108.0 | 420 |
| A9/12 | 2.50 | 89.0 | 115.0 | 81.0 | 110.0 | 104.5 | 120.0 | 580 |
| A10/13 | 2.80 | 97.0 | 127.5 | 91.0 | 119.5 | 118.0 | 133.0 | 800 |
| A11/14 | 3.00 | 108.0 | 142.0 | 97.5 | 136.0 | 123.0 | 140.0 | 1010 |
| A12/15 | 3.20 | 118.0 | 154.5 | 112.0 | 148.0 | 130.0 | 150.0 | 1350 |
| A14/17 | 3.80 | 140.0 | 182.0 | 133.0 | 173.0 | 150.0 | 170.0 | 2110 |
Please contact us for more product specifications.
Advantages of SEFU's A-type Feeder Sleeves
- Economical for high-volume production.
- Customizable upon request to suit the materials being fed into the reservoir.
- Designed to withstand high-pressure and thermal stresses.
- Low gas output, good air permeability, and high fire resistance.
Features & Benefits
The low-density refractory component is used to retain thermal energy for extended periods, facilitating linear feeding from the reservoir into the casting.
- Combined with thermal insulation materials and heating agents that are pollution-free for alloys, it prevents impurities from entering the molten metal, maintaining high purity and quality.
- With a refractoriness close to 1770°C, the sleeve remains stable under extreme temperatures without deforming or losing its shape.
- The feeding distance of SEFU’s A-type riser sleeve is greater than that of ordinary sand mold exothermic sleeves, allowing the liquified metal to feed across a larger casting area.
- The low-density sleeves reduce heat loss while offering excellent thermal conductivity.
- SEFU’s casting sleeves are carefully packed to prevent contamination and wrapped in multiple layers to ensure safe shipping.
Application
- Fittings – elbows, tees, and flanges
- Manifolds
- Engine blocks, and heads
- Engine mounts and brackets
- Cast iron valves
Breaker Cores
SEFU exothermic riser sleeves can be equipped with breaker cores according to your needs. The exothermic sleeve with breaker cores integrates the functions of easy cutting, heat preservation, and heating. The unique chip breaking core design can greatly reduce the cutting and grinding area of the heating sleeve and reduce the cleaning cost.
Why choose SEFU Ceramic?
With over a decade of experience in distributing high-quality auxiliary components, SEFU Ceramic is a trusted provider of advanced feeder systems. Our offerings include dynamic feeder systems designed to handle high-modulus applications, large-volume castings, and high-pressure molding. When you choose SEFU for A-type feeder sleeves, you’re opting for a manufacturer that provides:
- A diverse selection of A-type riser sleeves, offered in different shapes including conical, cylindrical, open-top, and with breaker cores
- OEM services
- 24/7 customer support
- Worldwide distribution
- Free custom-made samples for iron casting
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FAQs About the Exothermic Sleeve
Manufacturer and producer of exothermic sleeves for all non-ferrous metals, iron casting, and steel casting industries.
SEFU supplies you with exothermic riser sleeves in different sizes and shapes for feeding castings. If you need more information on exothermic riser sleeves, please let our experienced team serve you.
An A-type riser sleeve is typically effective in high-precision iron castings that require extended solidification time.
Yes, they can.
SEFU offers OEM/ODM services for A-type riser sleeves. Please provide your specific requirements, and we will assist you in selecting the appropriate size to meet the needs of your casting application.
We usually take about 15-20 days from receiving the purchase order to delivering the required quantity of sleeves.
Yes, we do.
We provide samples of the sleeves for testing. Please specify the parameters you need before sending your request. We offer samples at no cost.