FAQ for sand casting service

FAQ guide for all questions on sand casting serivce , hope it help you settle your hesitation in cooperation.

1. What Is Investment Casting?

Investment casting, also known as precision casting, is an industrial lost wax manufacturing process for many metal components.

2. What Kind of Products Could be Made in Investment Casting?

Investment casting process is suitable for products less than 100kg, and it is flexible for product design, no matter how complex it is. So investment casting can make almost all the small products. For larger products, sand casting is preferred.

3. What Are the Benefits of Investment Casting?

There are lots of benefits of investment casting, such as affordable tooling cost, no quantity limitation, flexible design, a large selection of material specifications, etc. See more about the benefits of investment castings

4. What Type of Tooling is Required for Investment Casting?

A split aluminum tool or die is used to create a wax pattern, which is then coated with layers of stucco and ceramic material. Before pouring the alloy, wax will be first melted away, which is where the term “lost wax casting” originated. In other processes (forging, stamping, die casting), tooling is quite much more complex and expensive.

5. What General Tolerances can We Meet for An Investment Casting Part?

For lost wax investment castings, we can reach general tolerances CT7-CT8. And for smaller precision parts, CT5-CT6 can be available.

6. What Is the Typical Surface Finish of Investment Casting?

Good surface finish starts with the injection die and the production of a wax pattern with an excellent surface. Next, the first layer of ceramic applied to the pattern is designed to replicate extreme detail and create an interior mold surface that is very smooth and non-reactive when contacted by molten metal. As a result, surface finishes of Ra12.5-Ra6.3 are typical with some alloys producing smoother surfaces than others.

7. Is Small Quantity Acceptable for Investment Castings in Your foundry?

Yes, we do not have quantity requirements for investment castings, even if a trial order with small quantity, it is also acceptable. Besides, we can supply demands of large quantity order with annual capability of 8,000t.

8. How Does Matson Metal do Quality Control for Investment Casting Parts?

First of all, we have a district inner control system of each production process. Secondly,we are equipped with complete testing instruments, such as Spectrograph, Brinell & Rockwell hardness tester, Impect testing instrument, MT instrument, etc. Thirdly, sample will be provided before mass production. Also, for mass production, we will select some products randomly for testing. And even if there will be quality problem after delivery, we will also send replacements asap at our own costs or return parts of production payments to our customers directly.

9. Can Matson Metal Foundry Provide Machining Service After Investment Casting?

Even if investment casting can reach excellent tolerances, sometimes, for tighter dimensional tolerances, additional machining will be needed. So to supply finished products, we also have a mature machining production line.

10. What Is the Lead Time of Investment Castings?

Normally, it will take us about 20-30 working days for one off sample, and another 25-35 working days for batch production

11. What Materials Can Your Foundry Make for Investment Castings?

Matson Metal Foundry offers a wide range of alloy options for investment castings. Common materials used in investment casting are : Alloy steel, carbon steel, stainless steel, gray iron, ductile iron, Bronze, etc. We can make products following your material specifications or material compositions.

12. What is Sand Casting?

Sand casting, it is also called sand molded casting, is a metal casting process that utilizes sand as the mold material. The expression “sand casting” can likewise allude to a product created through the sand casting process. In other words, the mold is made of compressed sand.

We can also define it as a manufacturing procedure where the liquid metal is filled the superfluous sand mold hole either by gravity or forcibly, where it hardens to frame the cavity shape. According to metal casting research, 60% of metal castings are produced through sand casting. This just goes to show how this method of producing metals is very popular across all the different industries.

13. Which type of sand is used for sand casting?

Can any sand be used for sand casting? The answer is a definite no. There are specific types of sand that can be used for the process.

Various types of sand are used for casting prospects. The perfect sand should hold up under mechanical pressure yet additionally be sufficiently porous to permit gasses and steam to escape during sand casting.

The picked sand should likewise join perfect flowability levels for your application. Its moisture content ought to be correctly picked. Sand with extremely low moisture content can cause the mold to break. On the other hand, the sand with high moisture content can cause saturation of steam in the mold. Sand grain shape and size likewise influence mold quality, just as the sand’s capacity to withstand high temperature (otherwise called obstinate quality). This can cause the mold to collapse when subjected to extreme pressure.

14. What's the Advantages of Sand Casting

As a manufacturer, why should I consider sand casting services? This is a big question that you may ask.

There are many benefits that you can gain from this essential service. Let’s look at some advantages of sand casting.

• Can be used on a wide variety of metals

  Sand castings can be promptly produced in almost any ferrous or non-ferrous compound. Some other metal casting procedures will cause physical and structural damages to the metals. However, that isn’t normally the case with sand casting. If you have materials that are usually deemed as impossible to cast by other methods, then sand casting is the best option for them.

• Versatile

  Sand casting is a versatile metal casting process. It can be used for both small scale and large scale applications.

  Is the method suited for only heavy metals? The answer is no. Sand casting can be used on both heavy and light metals.

  With sand casting, the size and the shape of the metal do not matter. All of them can be cast with maximum levels of efficiency. The method allows you to explore your design and creativity to the maximum.

• Fast metal casting

  Sand casting has proven to be one of the fastest metal casting methods. It can cast large volumes of metals within a short time.

  As a manufacturer, you will enjoy numerous benefits due to the speed and efficiency of this method.

  For instance, you can easily set your production goals, knowing that there will be no delays that are caused by the sand casting method. Even with speed, sand casting does not compromise with quality.

• Low cost of tooling

  Let’s say you only have a few metals to be cast, should you take it to the sand casting service company?

  While most metal casting methods are curated for large scale production, things are different with sand casting. It gives allowance for the low scale metal casting. You can do it with a minimum volume of the metals. On the other hand, sand casting can still fulfill your needs for large scale production.

15. Sand Casting Materials?

Like other metal processing techniques, not all metals are qualified to be processed by a particular method.

There are some techniques that can limit which metals to be processed and which ones cannot.

As we have already mentioned, sand casting is a versatile method that can be easily used on different types of metals.

The most common metals that can be processed through sand casting include cast iron, cast steel, aluminum alloys, and brass alloys.

All these alloys can be processed together with their respective alloys.

Since they have different casting temperatures, the casting service company has advanced equipment that can be used to change the temperature depending on the specifications of the metals.

16. What is the Cost of Sand Casting?

When looking for the best sand casting services, one of the issues that you cannot ignore is the cost factor. How much does it cost to have my metals sand cast?

It is obvious that the cost of sand casting is not fixed. It keeps varying depending on several parameters.

One of the factors is the material to be sand cast. Since different metals have their unique properties, you should not expect all of them to cost the same. Some are cheaper than others.

The volume or quantity of the material to be processed also matters. Metal casting large quantities of metal will cost you more than when you process small quantities.

However, you can still get an affordable metal casting service even with high volumes of metals. This is where the economy of scale plays its role.

The design, shape, and dimension of the material will also determine the cost of sand casting. Complex and sophisticated metal sand casting designs will cost more than just ordinary designs.

17. What Application is Sand Casting Used for?

Sand casting has a wide range of industrial applications in the modern world. Some of the most common areas in which this metal casting service is used include:

• ransport industry which encompasses automobile and aerospace
• Plant machinery and tools
• Military and defense equipment and even arms
• Electrical appliances for domestic and commercial
• For pump and valve
• Industrial hardware tools

And many other applications that we have not listed. You can also consult a reliable sand casting company in China to know whether your part or product can be sand cast.