Design for Manufacture

Technical expertise

Vastcast has a team of qualified and experienced technical engineers, metallurgists, managers, and quality personnel with a wide range of experience and skills. Our team is supported by extensive equipment and in-house laboratory and coordinate measuring machine (CMM) facilities.


How we work with you

After receiving your models and instructions, we will carry out a process of design, analysis as well as inspection of your product. We will determine the key components of your product, whether it is the integrity of the casting, the material, or the dimensional characteristics.

Using our in-country casting simulation software, we will specify a casting method for your product. This method will be tested, revised, and retested until we achieve the desired result. Our casting simulations have been honed for over a decade to replicate our actual casting process with a high degree of accuracy.

Our process

At vastcast we continually strive to use only the best equipment and systems, and our experienced product development managers are on hand to help develop and design your new tool. Your product is then managed by our team of qualified and technical engineers under the strictest quality controls.
Our processes are controlled by a range of modern technologies, including data logging, routine testing, and spectral analysis, ensuring your product is right every time.

Designing your product

Starting with an idea, outline drawing, or concept 3D model, we can quickly provide detailed drawings and diagrams to help you finalize your design requirements.

We use software such as Solidworks™ PROE, UG, and others to enable you to visualize the final product. There are a number of design guidelines to consider.

Investment casting design considerations

We need to consider several key points to ensure we can deliver your final product on time and within budget.

We have listed some of the more important aspects below.

  • Keep the thickness of the casting sections consistent to avoid several sections meeting at one point.
  • We do not require draft angles
  • Avoid heavy, isolated sections
  • Avoid sharp inside corners; a small radius of 0.5 mm is preferable
  • Most holes can be cast to clearance, reamed, or tapped dimensions
  • Specify all required numbers, marks, and letters.
  • If required, specify machining allowances, and polished areas.
  • Casting feed pads should normally be placed on the heaviest part, in a flat area for easy removal.
  • Avoid deep narrow blinds or recesses where possible
  • Choose a suitable alloy from the standard range of alloys available for casting
  • Sections smaller than 1.0mm can be cast in situ, sections larger than 1.5mm are best.

Below is a table with our cast hole preferences:

  The maximum length of the hole Diameter of hole (d)
Through Holes  2.5 – 5.5mm ≤ 1.5 d
5.5 – 10mm ≤ 2.8 d
> 10mm ≤ 5.0 d
Blind Holes 3 – 5mm ≤ 1.0 d
5 – 15mm ≤ 2.0 d
> 15mm ≤ 3.0 d
Note: Features that exceed these design constraints can be cast utilizing preformed ceramic cores

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We’d like to work with you

Send us a message if you have any questions or request a quote. Our experts will give you a reply within 24 hours and help you select the right valve you want.

Tel/Whatsapp:  +86 13345064499