Heat Resistant Products
Why Choose Us
Expertise
Our knowledge and expertise ensure the production of fixtures that meet or exceed industry standards.
Precision
Philloy's casting process ensures dimensional accuracy and consistency, resulting in fixtures that precisely meet the design specifications.
Customization
Whether it's modifying existing designs or creating entirely new fixtures, we can accommodate various specifications and preferences.
Quality Assurance
Philloy implements rigorous quality control measures throughout the casting process to ensure the highest quality standards are met.
A heat-treating basket is used in the heat-treating process. It is what the components that are about to be heat treated get put onto before being exposed to the extreme heat. Depending on what kind of treatment they are getting, it will vary for how long these baskets need to be exposed to the heat.
What Material Is Heat Treatment Basket Made Of?
The heat treatment basket is typically made of metal or graphite. These materials are chosen for their ability to withstand long-term high-temperature use without deformation, typically in the range of 900 to 1200 °C, and for their stable bearing capacity. This makes them particularly suitable for use in vacuum sintering furnaces, vacuum brazing furnaces, vacuum quenching furnaces, and other vacuum heat treatment industries.
The metal used in heat treatment baskets can include various types such as tool steels, carburizing steels, high-strength low-alloy (HSLA) steels, alloyed steels, stainless steels, and superalloys. These materials are selected based on their thermal resistance and structural integrity under high temperatures. Superalloys, for instance, are heat-resistant materials based on nickel, iron-nickel, and cobalt-nickel, which are excellent for maintaining strength at high temperatures.
Graphite is another material used due to its high thermal conductivity and resistance to thermal shock. It is particularly useful in applications where maintaining a stable temperature is crucial, such as in vacuum furnaces. Graphite's ability to withstand high temperatures without significant deformation makes it a preferred choice for heat treatment processes.
The baskets are available in various specifications, including flat plate and basket types, and can be customized according to user needs. This customization includes different shapes, sizes, and configurations like round grids, square grids, multiple trays bolted together, and more. The design can be tailored to fit specific furnace layouts and operational requirements.
Heat treatment baskets are integral to processes such as annealing, sintering, tempering, brazing, hardening, low-pressure carburizing and nitriding, and solution heat treating. They serve industries ranging from aviation and automotive to medical and nuclear, where the precise control of heat treatment is critical for the quality and performance of the materials being processed.
How Are Heat Treating Baskets Made?
Annealing
Annealing is applied when steel is treated at a high temperature and then cooled very slowly to room temperature to produce its high ductility and strength. Otherwise stated, annealing is performed by heating a component at a certain temperature level before it gets soaked at room temperature.
Tempering
When steel has both been quenched and hardened for a period of time prior to being heated, the process involved would be tempering. The temperature at which this procedure is carried out is an important factor that dictates the hardness and strength that is obtained. For instance, high temperatures will produce high ductility, but low hardness and strength. On the other hand, low temperatures will result in low ductility, but high hardness and strength. It’s extremely essential to choose the proper tempering temperature to achieve the desired level of hardness and strength. Tempering is performed on carbon steels that have been hardened to reduce their brittleness.
Hardening
This process involves the heating of steel at a specific temperature until its pearlite is transformed into austenite before it is rapidly quenched in water or oil. The appropriate temperature at which the transformation quickly takes place is highly dependent upon the steel’s carbon content. For the core to be fully transformed into austenite, the heating time must be increased.
Heat treating baskets are baskets used in the heat treatment process of metals or alloys. These baskets typically have a secure, protective covering to prevent damage to the materials being heat treated, and may also include various features such as drainage holes or cooling systems to optimize the heat treatment process.
The global Heat Treating Baskets market was valued at US$ million in 2023 and is anticipated to reach US$ million by 2030, witnessing a CAGR of % during the forecast period 2024-2030.
North American market for Heat Treating Baskets is estimated to increase from $ million in 2023 to reach $ million by 2030, at a CAGR of % during the forecast period of 2024 through 2030.
Asia-Pacific market for Heat Treating Baskets is estimated to increase from $ million in 2023 to reach $ million by 2030, at a CAGR of % during the forecast period of 2024 through 2030.
Heat Treat Basket Replacement: What To Know
Heat treating baskets are a crucial element in your manufacturing process. They have a significant impact on the efficiency of the parts finishing process. Due to the extreme environments they are constantly exposed to, they will need to periodically be replaced.
Consideration #1 – Minimizing basket weight
Whether your baskets are robotically loaded or loaded by hand, weight is often a factor – a factor in how it’s loaded and how productive the load is. Reducing basket weight brings several benefits particularly with efficiency. By designing and fabricating a basket with higher grade materials that weigh less, efficiency can be gained during the heat treating process.
Consideration #2 – Maximizing for loading efficiency
When loading parts into a furnace basket, the goal is almost always to maximize loading efficiency. However, proper spacing is necessary to allow for atmosphere circulation and temperature uniformity.
Consideration #3 – Minimizing distortion
Over the course of their lifespan, baskets will experience distortion, twisting and sagging from heating and/or quenching — these are also common visual indications that a basket is nearing the end of it’s life.
Heat-resistant steel castings are specialized components made from steel alloys that exhibit exceptional resistance to high temperatures, making them ideal for applications in extreme heat environments. These castings retain their mechanical properties and structural integrity even at elevated temperatures, ensuring reliable performance in critical industrial processes.
1. Pay Attention To Heat
Heat resistant steel castings need to be heated during use, but the heating process must be gradually heated. If the temperature rises too fast, it will cause the welding structure to be affected by thermal stress, resulting in cracks.
2. Pay attention to cooling
The cooling process of heat-resistant steel castings is also important. In the cooling, should not be too fast, must be slow cooling. Too fast cooling can lead to changes in the structure of heat-resistant steel castings, resulting in problems such as deformation or rupture.
3. Avoid excessive wear and tear
In use, it is also very important to avoid excessive wear and tear. Users need to pay attention to the degree of grinding to prevent excessive wear on the surface of the parts. Excessive wear will lead to shorter planned service life and may lead to more serious safety accidents.
4. Prevent overuse
Heat-resistant steel castings have a certain service life, and they need to be replaced in time once they exceed their service life. Overuse will lead to fatigue, brittle parts, affect the use effect, and even accidents.
5. Check regularly
Regular inspection is one of the necessary measures to ensure the safe use of heat-resistant steel castings. The purpose of regular inspection is to detect whether there are cracks, distortions and deformation of equipment components, and whether electrical appliances and pipes are working properly.
Heat Resistant Steel Castings Tools For Machining
The first is about the requirements of the geometric parameters of the tool, in the processing of heat resistant steel alloy, the geometric shape of the cutting part of the tool should generally be considered from the front Angle, the back Angle. At the same time, the surface roughness of the cutting part should also meet the relevant requirements. The vacuum furnace of heat treatment equipment can improve the surface finish of the cutting part, which can reduce the resistance when the chips are crimped and improve the durability of the tool.
Secondly, in the processing of heat-resistant steel castings, the corresponding requirements on the material of the tool are put forward. Due to the large cutting force required, its tool must be strong and rigid enough to avoid flutter and deformation during cutting. This requires the selection of appropriate large cross section area of the knife, but also the use of high strength materials to make the knife.
Anti-oxidation steel (or heat resistant non-peeling steel)
This kind of steel at high temperature (generally in 550 ~ 1200℃) has good anti-oxidation and anti-corrosion performance at high temperature, and has a certain high temperature strength. It is used for manufacturing all kinds of heating furnace parts and heat exchangers. It is also used for manufacturing the combustion market of the heat turbine, the hanging melon of the boiler, the bottom plate of the heating furnace, the roll table and the tube of the furnace. Oxidation resistance is the main index, the component itself is not under great pressure.
Thermal strength steel
At high temperature (usually at 450 ~ 900℃), it is not only able to withstand considerable additional stress, but also has excellent anti-oxidation and anti-high-temperature gas corrosion ability. It is usually required to withstand periodic variable stress. It is usually used as rotor and blade of steam turbine and gas turbine, superheater of boiler, bolt and spring working at high temperature, inlet and outlet valve of internal combustion engine, oil hydrogenation reactor, etc.
Composition And Properties Of Heat-Resistant Steel Castings
Alloying Elements In Heat-Resistant Steel
The exceptional heat resistance of these castings is attributed to the careful selection of alloying elements. Chromium, nickel, and molybdenum are common additives that form stable oxides on the surface, providing protection against corrosion and high-temperature oxidation.
High-temperature mechanical properties
Heat-resistant steel castings retain their mechanical strength and hardness even at elevated temperatures, ensuring that they can withstand heavy loads and stresses in extreme conditions.
Resistance to corrosion and oxidation
One of the most significant advantages of heat-resistant steel castings is their resistance to corrosion and oxidation, which makes them highly reliable and durable in aggressive environments.
Manufacturing Process of Heat-Resistant Steel Castings
Melting and pouring
The manufacturing process starts with the precise melting of raw materials to achieve the desired alloy composition. The molten metal is then poured into molds to form the desired shape of the casting.
Solidification and cooling
Once poured, the molten metal solidifies and takes the shape of the mold. Proper cooling and solidification are crucial to ensure the desired microstructure and properties.
Heat treatment
After solidification, heat-resistant steel castings undergo heat treatment processes such as quenching and tempering to optimize their mechanical properties for high-temperature applications.
Applications of Heat-Resistant Steel Castings
Power generation industry
In power plants, heat-resistant steel castings are used in turbine blades, boiler parts, and exhaust systems, where they can withstand the high temperatures and pressures associated with electricity generation.
Petrochemical industry
Heat-resistant steel castings find extensive use in the petrochemical sector, where they are employed in processing units, reactors, and heat exchangers handling corrosive and high-temperature materials.
Aerospace industry
Aerospace applications demand materials that can withstand extreme conditions. Heat-resistant steel castings are used in aircraft engines and exhaust systems, providing reliable performance even in the harshest environments.
Certifications
Our Factory
Philloy Machinery has a strong technical team, a total of 5 engineers, each engineer has at least 20 years of work experience in the field of casting, forging and machining. When receiving customer's request, we can recommend the most efficient manufacturing process for our customers and offer professional suggestions on product design. Reinforced by advanced inspection Equipment and strict QC process, we can confidently compensate our customers for any quality issues of our product. Besides, with our warehousing service and global presence, we are ensuring our customers on-time delivery and customer service so they will have their components whenever they need.
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