Besser is one of the largest stainless steel foundry in China. With our decades of the professional stainless steel casting process, We provide you with customized stainless steel casting services to meet your precise design specifications and any required grade.
What is Stainless Steel Investment Casting?
Stainless steel casting, or stainless steel investment casting, is an investment casting process for stainless steel alloys. It is a lost wax investment casting process that solidifies by pouring molten stainless steel into a mold. Thereby a solid stainless steel part of the desired shape is obtained. Stainless steel has the characteristics of rust resistance, corrosion resistance and bright appearance, so it has always been the first choice for various metal products.
Common Cast Stainless Steel Grades
304 is widely accepted in the food industry as the standard for cleanliness as well as corrosion resistance.
316 is known for its superior corrosion resistance, making it ideal for many uses including marine environments.
400 series steels are high strength and very machinable. They will tend to break rather than bend under intense pressure.
17-4 is the strongest of the stainless steel family and is used on parts that cannot bend.
Applications of Stainless Steel Investment Castings
Stainless Steel Casting Parts
Stainless Steel Investment Casting Process
1. Create the pattern
Create original patterns using wax, clay, wood, plastic or other materials. The pattern defines the geometry of the finished part.
2. Wax mold making and assembly
After the mold is ready, the wax is injected into the mold cavity, and the wax mold is removed from the mold after cooling. Weld it one by one with the casting system to form an assembly that looks like a tree.
3. Shell making
We dip the tree into a wet, clay-like material—a ceramic slurry. We let it dry. This happens multiple times so that the tree has a strong outer layer.
4. Dewaxing
Dewaxing is the process of melting the wax inside the shell with high temperature steam and then discharging it to form a cavity that can be poured into the mold.
5. Cast the metal
Molten metal is poured into the shell. The tree we built in the second step defines where the metal goes. Now a metal part exists where each pattern used to be.
6. Remove the shell
After the metal has solidified, techniques such as mechanical chipping, hammering, vibrating, high-pressure water jetting and media blasting are used to break the mould and remove the metal casting.
7. Finishing
After grinding, the completed casting is then subject to finishing. This usually goes further than grinding, with impurities and negatives being removed via hand tooling and welding.
8. Inspect the parts
After the production is completed, inspection is also an indispensable process before shipment. Inspection of stainless steel castings includes dimensional inspection, defect inspection, and material inspection. Only qualified products can be shipped to customers.
Stainless Steel Investment Casting Tolerance Standards
|
ISO8062(GB/T6414) CT5-CT6 |
|||||
|
Linear Dimensional Tolerance (mm) |
|||||
|
＞ |
≤ |
CT5 |
CT6 |
||
|
0 |
10 |
0.36 |
±0.18 |
0.52 |
±0.26 |
|
10 |
16 |
0.38 |
±0.19 |
0.54 |
±0.27 |
|
16 |
25 |
0.42 |
±0.21 |
0.58 |
±0.29 |
|
25 |
40 |
0.46 |
±0.23 |
0.64 |
±0.32 |
|
40 |
63 |
0.5 |
±0.25 |
0.7 |
±0.35 |
|
63 |
100 |
0.56 |
±0.28 |
0.78 |
±0.39 |
|
100 |
160 |
0.62 |
±0.31 |
0.88 |
±0.44 |
|
160 |
250 |
0.7 |
±0.35 |
1 |
±0.5 |
|
250 |
400 |
0.78 |
±0.39 |
1.1 |
±0.55 |
|
400 |
630 |
0.9 |
±0.45 |
1.2 |
±0.6 |
What Are the Advantages of Stainless Steel Investment Castings?
Manufacturing flexibility – With steel casting, we can choose among different chemical compositions depending on the engineering requirements of the job. More than any other cast metal, cast steel offers a wider range of physical and mechanical properties that are possible, helping provide added versatility to allow the steel cast to be designed for any job.
Repeatable casts – Unlike welding, which can be difficult to create streamlined or repeatable shapes, casting allows for a more streamlined approach. This is because a mold is created, making the process more repeatable and efficient when creating multiple casts.
Variable weight ranges – Steel castings can be created from a wide range of weights depending on what is needed. For example, a precision cast weighing only a few grams can be created, or a large steel casting that weighs many tons is possible. This flexibility is possible weights means that no steel casting job is too big or too small to be completed.
Greater reliability and cost benefits – Cast steel parts are made of an isotropic material, increasing the engineering reliability by creating a very strong overall structure. This means you can count on it for day-to-day use. This superior reliability comes with reduced weight and shorter delivery time. These things combine to make steel casting more economically efficient and viable.
China's Leading Stainless Steel Casting Company
Besser casting is one of the leading stainless steel investment casting companies in China, we are ISO:9001 certified and meet international quality standards. We can also provide NDT reports for stainless steel castings.
Our proven casting technology makes us the most reliable one-stop supplier of stainless steel castings. And we have successfully manufactured stainless steel castings for customers in more than 30 countries, helping their projects to be successful.
6 reasons why Besser is your best choice:
We have more than ten years of overseas sales experience and a professional overseas sales team, which can communicate with you without barriers and provide you with good services.
Offering complete stainless steel casting solutions, we are able to provide you with not only investment casting services, but also finishing and surface treatment services.
More competitive price, we have a mature casting process. It can reduce unnecessary costs for you. Reduce purchasing costs for you.
We are a non-standard custom factory and do not have our own molds. The existing more than 3,000 pairs of molds are owned by customers. We only store them on behalf of customers, so we cannot use customers' molds. If you need to develop products, you can only develop new molds.