Heat-resistant Steel Precision Castings Archives

29Sep, 2025

Heat-resistant steel frame: The “durable Bearer”

The heat-resistant steel frame is specially designed for working conditions ranging from 200℃ to 1200℃.Easily solve the problem of high-temperature damage.

Choosing the right one can reduce the trouble of frequently changing the material frame.Reduce equipment maintenance costs and ensure the stable operation of high-temperature production lines.

Four Core Advantages of Heat-resistant Steel Frames

Super high temperature resistance: It will not soften or deform due to high temperatures, ensuring stable material load-bearing.

Anti-oxidation and corrosion resistance: Prevent water and material leakage due to corrosion, and reduce the risk of production accidents.

High structural strength: Even after frequent loading and unloading at high temperatures, the structure remains stable.

Customized adaptation: No material jamming or displacement after installation, enhancing production efficiency.

Five Major Application Scenarios of Heat-resistant Steel Frames

Heat treatment industry: Avoid damage to the material frame when the workpiece is heated.

Metallurgical industry: The material frame will not crack due to the erosion of molten metal.

Chemical industry: Ensure no leakage and no pollution during the raw material transportation process.

Building materials industry: Resistant to clinker wear and high-temperature erosion.

New energy industry: Complies with battery production standards.

Four Key Points for Choosing the Right Heat-resistant Steel Frame

Select materials based on temperature resistance requirements: Ask suppliers to provide temperature resistance test reports of the materials to avoid “passing off inferior goods as good ones”.

Confirm the load-bearing capacity: Avoid overloading deformation.

Look at the structural design: The perforated design is suitable for working conditions that require ventilation. Choose more efficient ones as needed.

Check the process details: avoid scratching the materials or causing water leakage.

Three Tips for Extending the Service Life of Heat-Resistant Steel Frames

Avoid sudden temperature changes: Prevent cracking caused by excessive temperature differences.

Regular inspection and maintenance: Any problems found should be promptly repaired by welding or grinding to prevent the expansion of corrosion.

Clean the residual materials: Wear the surface of the material frame. Read More

18Nov, 2021

Design of Heat-resistant Steel Precision Castings

What should be paid attention to in the structural design of heat-resistant steel precision castings?

To facilitate the manufacture of models, core boxes, and easy modeling:

The shape of the casting should be as simple as possible, so that it can be easy to mold. Try to make the casting parting surface flat and reduce the number as much as possible.
For the inner cavity of the casting, use the core as little as possible when casting, or not use it. If it is to be used, there must be enough process holes to facilitate exhaust and so on.
In the drawing direction, there should be a certain structural slope to strengthen the structural strength of the casting.

Reduce the tendency to produce casting defects:

The wall thickness of the castings should be uniform to prevent defects such as shrinkage holes and hot cracks. It is also necessary to maintain good solidification conditions to prevent problems.
The connection between the iron walls should avoid sharp corners or metal accumulation. The transition between wall thickness and wall thickness should be carried out gradually to avoid sudden changes to prevent stress concentration.
If there is a casting hole on the flat wall of the iron part, the convex edge should be used for reinforcement to reduce the wall thickness.
A large horizontal surface should be avoided in the casting.

In addition, the casting must have good forming properties, and the wall thickness of the casting must not be lower than the specified range.

FAQ:

Q: What kinds of products do you offer?
A: Specializing in the production of various heat resistant steel precision casting, Heat-treatment Fixtures, Heat Treatment Baskets, Heat Treatment Trays, Radiant Tubes, Furnace Rollers, furnace grate bars,Smelting pot, Slag Pot, Aluminum Ingot Mold, etc.

Q: Can you manufacture Customization products?
A: Yes, We can produce both standard and special prosucts.
We can produce by your samples or technical drawings.
We can build the molds and fixtures.

Q: What is the Warranty for our products ?
A: If any quality problems on our side occurred in this period , we will take on the shipping cost and replacement.

Q: What information do we need to provide to you in order to confirm our parts order?
A: provide us your drawings or detailed specifications for our technical staff could make the drawing.

11Nov, 2021

What Factors Affect the Service Temperature of Heat resistant Steel Precision Castings?

What factors affect the service temperature of heat resistant steel precision castings

The influence of chemical composition:

The influence of the composition of heat resistant steel precision casting on high service temperature is mainly manifested in the impact on the high-temperature strength, oxidation resistance and corrosion resistance of heat resistant steel precision castings. These factors have a direct impact on the high operating temperature.

The influence of size:

Heat resistant steel precision casting must be able to withstand the deformation caused by their own weight when working at high temperatures.
Second, the relative oxidation rates of materials of different sizes are different.

The impact of the working environment:

Heat-resistant steel precision castings will undergo physical and chemical reactions with the components in the environmental medium at high temperatures, and the surface of the castings will be corroded, thereby reducing their service life.

What are the factors of the error value in the temperature measurement of heat resistant steel precision castings

Observation hole obstacle: For most instruments, any weakening of the signal will cause the temperature indication value to drop; dirt on the observation window affects the accuracy of most pyrometers.
Calibration: The industry standard is to calibrate once a year. However, the drift and failure of the instrument has its own schedule. The ideal approach is to calibrate all optical components used in the factory (observation glass or observation mirror).
Instrument calibration: aiming through the lens requires that the two optical paths overlap accurately, which will affect all levels of conventional pyrometers.
Unknown/changing emissivity-a variety of alloys, disturbance effects, temperature and wavelength dependence, and changes in composition during processing, all of which play a role in the unpredictability of emissivity.
Observation window glass material: not all glasses have the same transmission properties; some are “gray” colored, while the transmission properties of other glasses vary with wavelength. This will cause the conventional pyrometer to fail.
Steam emission: For high-pressure melting (close to and above atmospheric pressure), the overflowing gas in the molten pool or crucible will increase or decrease the heat radiation, thus causing errors.

Eternal Bliss Alloy Casting & Forging Co, Ltd.

Caesar

E-mail: sales@ebcastworld.com

What’s app: 0086-130 930 23772

https://ebcastworld.com

10Nov, 2021

Heat-resistant Steel Precision Castings for Strength

What are the factors related to the strength of heat-resistant steel precision castings?

The performance of heat-resistant steel precision castings will change, especially after the influence of some specific factors, the performance changes will be more obvious. So in terms of the strength of heat-resistant steel precision castings, what are the influencing factors?

On the one hand, it must be the influence of temperature. Temperature fluctuations have a great influence on any material, including heat-resistant steel. Due to factors such as multiple starts, shutdowns or overloads, the operating temperature will fluctuate, and temperature fluctuations will accelerate the creep process of the material, thereby reducing the endurance strength.

Another aspect is the effect of stress. Under the influence of factors such as test temperature, notch geometry, steel’s lasting plasticity, heat treatment process and steel composition, the amount of stress existing in heat-resistant steel precision castings will also be different. This in turn affects the brittleness of the material, so this factor must be given enough attention in the design.

What are the factors that affect the accuracy of heat-resistant steel precision castings?

Influence of casting structure:

The casting wall is thick and the shrinkage rate is large, and the casting wall is thin and the shrinkage rate is small.
The free shrinkage rate is large, and the hindered shrinkage rate is small.

The influence of casting material:

The higher the carbon content in the material, the smaller the linear shrinkage rate and the lower the carbon content, the greater the linear shrinkage rate.

The influence of mould making on the linear shrinkage rate of castings:

The influence of wax injection temperature, wax injection pressure, and pressure holding time on the size of the investment mold is obvious from the wax injection temperature, followed by the wax injection pressure. The pressure holding time has little effect on the final size of the investment mold after the investment is formed.
The linear shrinkage rate of wax is about 0.9-1.1%.
When the investment mold is stored, there will be further shrinkage, and its shrinkage value is about 10% of the total shrinkage, but when stored for 12 hours, the investment mold size is basically stable.
The radial shrinkage rate of the wax mold is only 30-40% of the lengthwise shrinkage rate. The influence of the wax injection temperature on the free shrinkage rate is far greater than the influence on the hindered shrinkage rate.

The influence of shell-making materials:

Zircon sand, zircon powder, Shangdian sand, and Shangdian powder are used. Because of their small expansion coefficient, they can be ignored.

The effect of shell baking:

Because the expansion coefficient of the shell is small, when the temperature of the shell is 1150℃, it is only 0.053%, so it can be ignored.

The influence of casting temperature:

The higher the casting temperature, the greater the shrinkage rate, and the lower the casting temperature, the smaller the shrinkage rate, so the casting temperature should be appropriate.

Eternal Bliss Alloy Casting & Forging Co, Ltd.

Caesar

E-mail: sales@ebcastworld.com

What’s app: 0086-130 930 23772

https://ebcastworld.com

6Nov, 2021

Heat resistant Steel Precision Casting Process

Heat resistant Steel Precision Casting

Annealing
Annealing is a heat treatment process in which steel castings are heated to 20-30°C above Ac3, kept for a certain period of time, and cooled.
The purpose of annealing is to eliminate columnar crystals, coarse equiaxed crystals, Widmanstatten structure and dendritic segregation in the cast structure to improve the mechanical properties of cast steel.

Normalizing
Normalizing is a heat treatment process in which steel castings are heated to 30-50°C above the Ac3 temperature to make them completely austenitized, and then cooled in still air.
The purpose of normalizing is to refine the structure of the steel so that it has the required mechanical properties, and it is also used as a preparatory treatment for subsequent heat treatment.

Quenching
Quenching is a heat treatment process in which steel castings are heated to austenitization and kept for a certain period of time and then cooled in an appropriate manner to obtain martensite or bainite structure.

Especially after quenching, the tooling workpiece is directly quenched with water, quenched oil, and quenched with brine, which has special requirements for the use of tooling.

heat-resistant steel precision casting of process Requirements

Heating is one of the important processes for heat treatment of heat-resistant steel precision castings. There are many heating methods. In the past, charcoal and coal were used as heat sources, but now liquid and gas fuels are used for heating. Nevertheless, it is recommended to use electric heating for heat-resistant steel precision casting, which is not only easy to control but also free of environmental pollution.

Secondly,cooling is also an indispensable step in the heat treatment process of heat-resistant steel precision casting. Although the cooling method varies from process to process, the key is to control the cooling rate. Relatively speaking, the annealing cooling rate of heat-resistant steel precision castings is relatively slow, and the cooling rate of normalizing is faster, and the faster is the cooling rate of quenching heat-resistant steel precision casting.

When cooling, due to the different steel grades of heat-resistant steel precision casting, the requirements put forward are also different. But in short, heat treatment is a metal heat treatment process that heats the heat-resistant steel precision casting as a whole, and then cools it at an appropriate speed to obtain the required metallographic structure to change its overall mechanical properties.

Heat treatment stress of heat-resistant steel precision casting

In the heating and cooling process of heat-resistant steel precision castings, due to the inconsistency of the cooling rate and time between the surface and the core, a temperature difference is formed, which will cause uneven volume expansion and contraction to produce stress, that is thermal stress.

Thermal Stress

Under the action of thermal stress, because the surface temperature is lower than the core part, and the contraction is greater than the core part, the core part is stretched. When the cooling is over, the core part is compressed because the cooling volume contraction of the core part cannot proceed freely. pull. That is, under the action of thermal stress, the surface of the workpiece is compressed and the core is stretched. This phenomenon is affected by factors such as cooling rate, material composition and heat treatment process.

When the cooling rate is faster, the carbon content and alloy composition are higher, and the uneven plastic deformation under the action of thermal stress during the cooling process is larger and then the residual stress formed is larger.

On the other hand, due to the change of the structure of the steel during the heat treatment process, that is, the transformation of austenite to martensite, the increase in specific volume will be accompanied by the expansion of the volume of the workpiece, and the phases of each part of the workpiece will change successively, resulting in inconsistent volume growth and structure. stress.
The final result of the change in tissue stress is the tensile stress on the surface and the compressive stress on the core, which is exactly the opposite of the thermal stress.
The size of the structure stress is related to the cooling rate of the workpiece in the martensite transformation zone, the shape, the chemical composition of the material and other factors.

FAQ:

Q: Can you manufacture Customization products?
A: Yes, We can produce both standard and special prosucts.
We can produce by your samples or technical drawings.
We can build the molds and fixtures.

Q: Can the products be customized as our need, such as put on our logo?
A: Surely our products can be customized as your need, Put on your logo is also available.

Q: What is the Warranty for our products ?
A: If any quality problems on our side occurred in this period , we will take on the shipping cost and replacement.

Q: What information do we need to provide to you in order to confirm our parts order?
A: provide us your drawings or detailed specifications for our technical staff could make the drawing.

Q: What is the delivery time of your products?
A: It depends on the inventory availability.If items needed are in stock, the delivery time would be within 7 work days, but if not the delivery time would be around 30 work days.
We will send working schedule of your order each week.
The detailed inspection picturesion by email.

Eternal Bliss Alloy Casting & Forging Co, Ltd.

Caesar

E-mail: sales@ebcastworld.com

What’s app: 0086-130 930 23772

www.ebcastworld.com

5Nov, 2021

Heat-resistant Steel Precision Castings

Heat-resistant Steel Precision Castings of Production Process

Smelting:
Heat-resistant steel is generally smelted in an electric arc furnace or induction furnace. High quality requirements often use vacuum refining and out-of-furnace refining processes.

Casting:

Some high-alloy heat-resistant steels are difficult to process and deform. The production of castings is not only more cost-effective than rolled products, but also castings have higher endurance strength. Therefore, heat-resistant cast steel occupies a considerable proportion of heat-resistant steel.

Heat-treated pearlitic heat-strength steel is usually used after normalizing or quenching and tempering.
Martensitic heat-resistant steel is quenched and tempered to stabilize the structure and obtain good comprehensive mechanical properties and high-temperature strength.
Ferritic steel cannot be strengthened by heat treatment.
In order to eliminate the internal stress caused by cold plastic deformation processing and welding, annealing treatment can be carried out at 650～830℃, and rapid cooling after annealing, so as to quickly pass through the brittle temperature range of 475℃.
Most of the austenitic anti-oxidation steel adopts high temperature solution heat treatment to obtain good cold deformation. Austenitic hot-strength steel is first treated with high-temperature solution treatment, and then aging treatment is performed at 60-100℃ higher than the use temperature to stabilize the structure.
Heat-resistant cast steel is mostly used in the as-cast state, and some heat treatments are used according to the type of heat-resistant steel.

Production process of heat-resistant steel precision castings

1. Determine the production process and check the mold according to the drawings provided by the user. If it is a new product, prepare it, determine the molding process, and send it to the mold maker to make a wooden mold.

2. According to the finished mold, determine the manufacturing process and operation method, the specific steps are as follows:

Put the resin sand into the sand mixer according to the old and new ratio and mix it evenly.
According to the quality of sand, in principle, add acid and resin according to the mass ratio to produce sand and fill the mold.
After the surface is hardened, the mold will be awakened and demolded, then the mold will be repaired, and the mud core will be dropped. After the virtual sand has been blown out, it will be dried by itself after being ignited.
Prepare the finished cavity according to the bottom cover box, seal the box and place the gate and riser for pouring.

3. Foundry smelting mainly involves the following preparations and operations:

First, perform chemical analysis on the raw materials.
Put a large piece of bottom material on the bottom of the furnace for pre-melting, and then gradually add small materials and scraps. When adding materials, be careful not to splash out the molten steel to avoid burns.
Wait for the molten steel to melt into the furnace cavity.
In the molten steel smelting process, in order to purify the molten steel, oxidation smelting is carried out, and the slag covering the surface is stripped off at the same time, and the steel is tapped immediately.
The molten steel poured from the furnace cavity into the steel drum is secondarily oxidized. At this time, the aluminum row must be inserted for the second deoxidation. Care must be taken during the operation to avoid burns.
When pouring, you must master the time, and wear protective clothing and safety helmets during the operation to be busy and not chaotic.

4. The product can be sanded at least four hours after pouring, and the finished product can be machined.

5. The quality inspection department inspects the manufactured products, including the secondary repair of geometric dimensions, surface shapes and defects. After each product is qualified, it will be solid-solution treated and marked with the word “inspection”, then packaged, dispatched, and dispatched. List and product warranty.

Heat-resistant steel precision castings of what are the factors that affect the production process

Design process of iron castings. When designing, in addition to determining the geometry and size of the casting according to the working conditions and the material properties of the metal, the rationality of the design should also be considered according to the process characteristics of the casting and the casting alloy to avoid deformation, cracking and composition of the casting. Defects such as segregation.
The casting process should be reasonable, that is, the appropriate modeling and core making method should be selected according to the structure, size and weight of the cast iron. In addition, the chilled iron, riser and gating system must be set reasonably to ensure the quality of cast iron parts.
Whether the quality of raw materials for casting is excellent or not. If the quality of materials such as metal charge, solvent, modifier or paint does not meet the standard, it will cause defects such as porosity, slag inclusion, and sand sticking in the iron castings, which will affect the internal and appearance quality of the iron castings.
The process operation procedures should be reasonable. When making castings, it is necessary to continuously improve the technical level of the workers, and at the same time, formulate reasonable process operating procedures to make the production process correct and reasonable.

Eternal Bliss Alloy Casting & Forging Co, Ltd.

Caesar

E-mail: sales@ebcastworld.com

What’s app: 0086-130 930 23772

www.ebcastworld.com

Tag Archives: Heat-resistant Steel Precision Castings

The heat-resistant steel frame is specially designed for working conditions ranging from 200℃ to 1200℃.Easily solve the problem of high-temperature damage.

Four Core Advantages of Heat-resistant Steel Frames

Five Major Application Scenarios of Heat-resistant Steel Frames

Four Key Points for Choosing the Right Heat-resistant Steel Frame

Three Tips for Extending the Service Life of Heat-Resistant Steel Frames

What should be paid attention to in the structural design of heat-resistant steel precision castings?

To facilitate the manufacture of models, core boxes, and easy modeling:

Reduce the tendency to produce casting defects:

FAQ:

What factors affect the service temperature of heat resistant steel precision castings

The influence of chemical composition:

The influence of size:

The impact of the working environment:

What are the factors of the error value in the ​temperature measurement of heat resistant steel precision castings

What are the factors related to the strength of heat-resistant steel precision castings?

What are the factors that affect the accuracy of heat-resistant steel precision castings?

Influence of casting structure:

The influence of casting material:

The influence of mould making on the linear shrinkage rate of castings:

The influence of shell-making materials:

The effect of shell baking:

The influence of casting temperature:

Heat resistant Steel Precision Casting

heat-resistant steel precision casting of process Requirements

Heat treatment stress of heat-resistant steel precision casting

Thermal Stress

FAQ:

Heat-resistant Steel Precision Castings of Production Process

Production process of heat-resistant steel precision castings

3. Foundry smelting mainly involves the following preparations and operations:

Heat-resistant steel precision castings of what are the factors that affect the production process

What are the factors of the error value in the temperature measurement of heat resistant steel precision castings