One of the best options to use in investment casting methods is stainless steel casting. Stainless steel casting involves the production of the oem stainless steel parts in the desired shape and is also termed stainless steel lost wax casting or precision casting.
Millions of industries use the process of stainless steel casting and the production value has touched more than 1200 tons per year.
So, in this article, we’ll discuss the step-by-step detailed production methods of stainless steel casting.
Stainless steel casting is the process of manufacturing complicated shapes and dimensions of steel components by heating and melting the required parts.
This technical process is used in different production industries to produce lost wax steel parts and other stainless steel components.
Without any further pause, let’s move on to the basic mechanism!
The shape and dimensions of your final component solely depend on the type of mould you produce in stainless steel.
This process of steel casting involves mold cavities that are made from wax or foam. Furthermore, to form a specific pattern on the mold cavity, the refractory material is used which forms the required pattern.
After a specific pattern is formed, the wax is melted, the molten material is put into the mould cavity which is then cooled and solidified.
Finally, your oem casting wax pattern is all set to use further.
Before we move on to our next segment, let me enlist some unique properties of mould material ( aluminum alloy) that you get in the casting process:
●Low melting point
●Soft in nature ( Low Hardness)
Thus, with these features in hand, you are ready for mould preparation and stainless steel casting investment.
By now, you have prepared the aluminum alloy mould successfully. Its time to prepare a wax model for producing stainless steel casting parts.
You can prepare wax models depending on the need of your steel casting parts. For instance, if you need to prepare one casting part, one wax model will be enough for that.
Following steps are involved in the wax modeling:
i- Checking the product:– After finalizing the wax model, perform a manual testing of the product. See if there is any error or misfunction in the final product because after the production you won’t be able to fix that fault.
ii- Tree Assembly:– Now, it’s time to fix the wax model with the help of a glue or spray. Attach a ceramic cup at the end of the wax bar and this will create a tree like arrangement of the bar thus, also termed as tree assembly.
iii- Dry the Model: Once the tree assembly is fixed, complete the drying process by allowing the wax model to air-dry. Drying the model for 5-8 hours would give best results then allow it to heat under high temperature of 1000 F- 2000 F.
As you follow the steps discussed above, you’re done with the modeling of the wax and tree assembly method. Now, let’s jump on to the next one.
Before you proceed with the manufacturing process, remember to stick the prepared wax model evenly. Coat a layer of the white latex so sand mold can be cured properly and then seal the wax model.
Layering white latex will enhance the hardness of your mold (sand) and will ease the baking process.
Now dewax the model to get wax water.
Not sure how to de-wax the model?
Don’t worry, as I’ve discussed the de-waxing steps below:
●Heat the wax model so to increase it’s melting point.
●Wax water will be formed after you heat the model.
●Melted material will flow out and this will complete de-waxing process.
But, how will the model look like after de-waxing?
Once de-waxing process is done, the wax model will no more than an empty sand shell and this is the principle aspect of precision casting.
And the good news is?
You’re just one step away from preparing stainless steel oem casting production.
Now, pour the hot molten stainless steel into that empty dewaxed sand shell.
You might be wondering why is it important to pour the liquid in its hot molten form?
Well, it has the following advantages:-
●Pouring the molten metal in hot condition will enhance the steady flow of the liquid through the mold cavity.
●The fluid will evenly move inside the cavity and will fill all the spaces of the mold cavity.
●The shape of your final oem casting product will not disrupt and will maintain its form even after the cooling process.
Nevertheless, the heating process will take some time but it will bring the fruit.
Now, head over to the final step and cool the molten stainless steel. Cool it and then complete the solidifying process.
Finally, to get the investment casting, break the sand shell manually or with the help of a machine. Separate the tree assembly and cut out the parts of the shell.
The resulted obtained component will be your final product of desired shape and dimensions. This final stainless steel product will be cut, separated and made available to be used in industries.
That’s it. Your stainless steel casting is now ready to use.
The above mentioned steps are more than enough for the production of stainless steel casting. However, industry manufacturers take one step ahead and test the final precision casting product again.
This is the testing step of the stainless steel casting in which the blanks are checked for any surface defects. If the final product contain any abnormality, it is then repaired with argon arc.
So, minor defects can be treated with argon arc but for major malfunctions, the shell is treated under the machined setup. It is returned into the furnace and again repaired to get the final stainless steel castings.
Best of all, we have discussed the detailed methods for the production of oem stainless steel casting. Now, it should be very convenient for you to incorporate these methods and get your desired product.