Stainless steel investment casting is a great way to create affordable, high-quality parts for sensitive applications. When determining the need for custom stainless steel parts by investment casting process, it is paramount to take into account the details a manufacturer needs to know and factors that affect costs and turnaround times. By being aware of these details in advance, you&#;ll be better equipped to set your project up for success.

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Considerations When Ordering Stainless Steel Investment Castings

Preliminary Design

Take advantage of the full stainless steel casting process and minimize costs by including details such as:

• Minimum section thickness: The desired rigidity and strength for a casting determines its minimum thickness. A stainless steel investment casting should be at least 3mm thick.
• Draft: Drafts are the tapers on a pattern&#;s vertical faces. They help remove a pattern from a mold without damaging its walls.
• Cores: Cores are the hollow spaces within a stainless steel casting. They may be a separate piece placed inside a mold to create a cavity if the mold alone cannot make the hollow space. Cores may be used in place of a draft, depending on the application.
• Parting line: Parting facilitates the production of molds and patterns. Patterns with straight parting lines in one plane are simpler and less expensive to produce than those with irregular lines because they simplify molding and coring.

Patterns

Manufacturers use wax patterns to make molds, or investments. A casting is only as good as its pattern, especially in regard to smooth finishes and close tolerances. Good communication regarding pattern equipment design and production will help prevent misunderstandings and give you a clearer picture of the costs involved.

Quantity

It&#;s best to specify the quantity of parts you require because it determines the type of tooling required. It also affects a stainless steel foundry&#;s ability to meet your production volume needs. Some foundry&#;s offer short-term, short-run projects; others might only focus on high-volume production.

Specifications

Specifications are a group of requirements that are mandatory for stainless steel investment casting process as outlined by ASTM International. The requirements serve to meet metallurgical standards. It is wise to follow standard specifications to prevent higher costs, misunderstandings, and the exclusion of potential foundries.

Foundries may use heat treatments to homogenize, standardize and enhance stainless steel&#;s properties. Solution treatment is the common heat treatment method for stainless steel casting, it can optimize the internal structure of products and will be beneficial for further machining operation.

Soundness

A stainless steel component&#;s soundness relates to the level of discontinuities or impurities in it, such as shrinkage or sand inclusions. These engineering requirements are important to include because stainless steel castings are never defect-free. Before production, define acceptance and rejection criteria with the foundry.

Testing and Inspection

After production, an investment casting manufacturer should test the stainless steel castings to ensure they meet specifications and for surface finish conditions, physical properties, cracks, internal soundness and dimensional accuracy. Clearly communicate and agree on the testing and inspection requirements with a manufacturer before production. After completing tests, manufactures may ship the stainless steel investment castings or subject them to further processing.

Weight

The more a stainless steel investment casting weighs, the more the materials will cost. Providing detailed weight-related data when requesting a quote will result in a more accurate estimate. Manufactures are interested in a casting&#;s gross and net weights.

Machining

Machining is the process of removing unneeded materials from a stainless steel casting to ensure dimensional accuracy. It is a good idea to allot a certain amount of material for machining allowance to produce a tight tolerance. When first produced, check the casting design to determine if machining requirements are realistic.

Schedules: Production and Delivery

The turnaround time you require for your short- and long-term needs will help you narrow down the foundries that can accommodate your request. When requesting a quote, keep in mind that the following will affect turnaround times after ordering a stainless steel investment casting:

• Commercial considerations
• Pattern construction and changes
• Tooling construction
• Sampling
• Inspections
• Full production setup
• Production
• Post-production processes
• Logistics and shipping

CFS has more than 20 years of experience making ISO-certified stainless steel investment castings. We&#;ll assist you through every part of the investment casting process, from design to product delivery. Our specialists will help you achieve the most economical solutions for your needs and personally oversee your project&#;s progress in person. Contact us today to learn more about using CFS for all your stainless steel investment casting needs.

Related Article: How Stainless Steel Casting Compared to Iron Casting?

Valve Casting

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Valve Castings

The valve is used to change the passage section and the flow direction of the medium. It has the functions of diversion, cutoff, regulation, throttling, check, split or overflow relief. Valve castings are control components in pipeline fluid delivery systems. They come in a wide variety of sizes and sizes.

Valve castings are widely used in chemical, petrochemical, petroleum, paper, mining, electric power, liquefied petroleum gas, food, pharmaceutical, water supply, and drainage, municipal, mechanical equipment, electronics industry, urban construction, and other fields.

Our foundry is a reliable valve parts manufacturer and supplier for valve clients all over the world. We can make all kinds of casting valve components for a check valve, butterfly valve, ball valve, gate valve, control valve, globe valve, plug valve, etc.

The main types of valve castings

Gate Valve Casting

We can offer the scale of Gate Valve Castings from our foundry. Steel gate valve castings can be used for steam, water, air, oil, gas, and non-acid fluids. These valve castings are specially designed to endure high temperatures and load. As per the client&#;s requirements, we can customize different gate valve castings.

Globe Valve Casting

Globe Valve Casting is widely used in the Pharmaceutical, Chemical, and petrochemicals industries. This industry has a high demand for Globe Valve Casting. As one of the best valve casting manufacturers, our product has Long-lasting and stable properties. It is welcome by our customers because of its comfort of fitting, supreme tensile energy, and accurate engineering.

Ball Valves Casting

Ball Valves Casting is the most exported one in our foundry. It is accepted by our customers at reasonable prices, trusted quality. These castings are broadly used in railway industries for air dryer systems with their hardy frame, greater services, and conventional dimensions

Valve Casting images

Valve Investment Casting Process

As per the material specification and dimensions of valve casting parts, we can make them in different casting processes:

Process 1:

Sand Casting: Also a casting process for valve casting parts. Sand casting is suitable for both steel and iron valve castings. Compare with lost foam and lost wax castings, it is more suitable to make larger valve components. Normally, we will need to leave more machining allowance for further machining operation. The max weight we can cast is around 2 tons per piece.

Process 2:

Lost Wax Casting: Can make cast steel valve components, like carbon steel, stainless steel, and other cast steel alloys. Lost wax casting is a precision casting method for valve components. So we can achieve good dimensions and tolerances, smoother surface. Stainless steel valve casting parts are widely used in the silica sol casting process, which is another lost wax method. We can use this casting process for butterfly valves, ball valves, etc.

Process 3:

Lost Foam Casting: This casting method is more suitable for making precision cast iron valve parts. It can also get a good surface finish and size. Such as net shape or near-net shape valve castings will need no machining or just little machining allowance.

Most importantly, valve casting provides an easier and less time-consuming way to make replacement parts when a system&#;s current valves break down and deteriorate. We believe that Your drawing + our technology = Satisfactory product

Materials of Valve Casting Parts are as following:

The common materials and standards are as below:

Stainless steel valve casting products Brief Introduction (Example)

Capabilities to supply valve castings

To supply finished valve casting parts, we have machining equipment as well (NC lathe, CNC, boring machine, drilling machine, etc) for different machining requirements. Besides, we also have the hydraulic testing capability to ensure workable valve castings. For large dimensions valve casting parts, to avoid casting defects, it is necessary to do magnetic particle testing and ultrasonic testing after casting.

In conclusion, you can enjoy lots of benefits to buy valve casting parts from our foundry. Like wide material selection, many casting methods, machining service, and so on. Once cooperating with us, you will feel lucky to cooperate with such a good supplier for our high quality and competitive prices. Even if you would like to source forged valve components, do not worry, we can also provide you with forged valve parts from another forging company. Just please contact us once you have the demands of valve components.

Q & A&#;

Q 1: What about the leading time?

A: Generally speaking, the leading time is about 35 days. But please confirm the exact delivery time with us as different products and different quantities will have different leading times.

Q 2: How to get a sample?

A: Sample order is acceptable. Please contact us and make sure what sample do you need. in general,It will take 25 days to finish your sample.

Q 3: What value-added services do we provide?

• 1. offer 100 % test for all products(no extra charge).
• 2. each new product provide four x ray film as a process assessment(no extra charge)
• 3. patent,purchase quantity to 10 tons(no extra charge)
• 4. valve body parts,hydraulic or pneumatic test(no extra charge)

Q 4: What other Valve Casting parts can you supply?

A: Valve Body, Valve disc,Valve bonnet, Valve gland

Q 5:How to place an order?

A: Leave a message, we can get your feedback immediately online.

The company is the world’s best valve parts casting supplier supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.