How Do We Achieve Best-In-Class Dimensions?
At SQC investment castings, we make sure that every part we produce, from the first to the thousandth, matches in quality, accuracy, and precision. What others see as above and beyond; we see as normal.
Technique
Our technique, known as investment casting, is great at creating products that are consistently the same, but we don't stop there.
Team
With our experts involved from the start, we can perfect your product even more.
Advanced technology
We use our deep understanding and top-notch technology to find and fix anything that could mess up the accuracy of your product.
We look at everything: the design of the part, the tools we use, where we position things, and how we make them. Remember, the sooner you get us involved in the design process, the better the precision. With SQC investment castings, you make sure every single piece is just as good as you planned. Every single time.
How Do We Achieve The Best Total Value?
At SQC Investment Castings, we understand the importance of cost optimization for every manufacturing business. We are good at finding real ways to save money, that go beyond mere piece prices.
We Achieve It By:
- Using Efficient Methods For Quick, On-Time Delivery To Help You Manage Inventory.
- Aiming To Boost Your Operations With Precision, Quality, And Smart Cost-Saving.
- Offering More Than Just Manufacturing – We Help Improve Your Entire Business.
- Rethinking Designs To Combine Parts Boost Durability, And Cut Expenses.
- Ensuring Quality At Every Step For Maximum Value And Performance.
- Crafting Top-Notch Metal Parts While Keeping Your Costs Down.
Tolerance & Dimensions Overview
1. Surface Finish
General: Surface finish quality depends on the metal used but usually matches industry standards.
For Ground Finishes: Add an extra 0.010 inches (0.25mm) to your measurements to compensate.
| Metal | C.I.A. value | |
|---|---|---|
| Micro-inches | ||
| As-cast | Machined | |
| Stainless Steels | 90-126 | 60-125 |
| Cobalt Chrome Alloys | 80-100 | 50-100 |
| Carbon Steels | 90-125 | 60-125 |
2. General Tolerances
Shape and Material: The shape and material of your product can affect how accurately it can be made, though standard industry sizes are normally fine.
Closer Tolerance: If needed, we can make some dimensions more precise after checking the design.
| himension | Tolerance |
|---|---|
| Upto 25 mm | ±0.25mm |
| Above 25 mm | ±0.25mm/25mm |
3. Straightness
General: Completely straight items are hard to make, but we can straighten them mechanically to improve straightness.
| Casting Length | As-cost | Correcteh |
|---|---|---|
| 25 mm | ±0.50 mm | ±0.25 mm |
| 50-100 mm | ±0.75 mm | ±0.50 mm |
| 100-150 mm | ±1.00 mm | ±0.50 mm |
| 150 mm | ±1.50 mm | ±0.62 mm |
Flatness
General: How flat an item is can be affected by its size. Using ribs helps prevent it from bending or twisting. We can also straighten it mechanically if necessary.
| Casting Length | As-cost | Correcteh |
|---|---|---|
| 25 mm | ±0.20 mm | ±0.10 mm |
| 50 mm | ±0.37 mm | ±0.15 mm |
| 75 mm | ±0.50 mm | ±0.20 mm |
| 100 mm | ±0.62 mm | ±0.25mm |
4. Cast Holes
Size Restrictions: The depth and diameter of holes are limited by the method used, but using pre-formed ceramic cores can let us exceed these limits at a higher cost.
| Through Holes | |
|---|---|
| Diameter (d) mm | Maximum Depth (D) mm |
| 3.17-6.35 | D upto 1.5 d |
| 6.35-12.70 | D upto 3.0 d |
| 12.70 | D upto 5.0 d |
| Blind Holes | |
| Diameter (d) mm | Maximum Depth (D) mm |
| 4.76-12.70 | D upto 1.5d |
| 12.70 | D upto 2.0 d |
5. Concentricity
General: Larger items can be made more perfectly centered. We can usually make adjustments mechanically if the item isn't too thick.
| O.D.(mm) | I.D. (mm) | Eccentricity (mm) | |
|---|---|---|---|
| As-cast | Corrected | ||
| 18.75 | 6.25 | ±0.100 | ±0.100 |
| 25.00 | 12.50 | ±0.125 | ±0.125 |
| 37.50 | 18.45 | ±0.200 | ±0.200 |
| 50.00 | 25.00 | ±0.250 | ±0.200 |
6. Roundness
General: For solid items, being perfectly round can be affected by the cooling process. The tolerances get stricter as the diameter increases.
| O.h. (mm) | Tolerance (mm) | I.h. (mm) | Tolerance (mm) |
|---|---|---|---|
| 12.50 | ±0.25 | upto 6.25 | ±0.30 |
| 25.00 | ±0.50 | 6.25-12.50 | ±0.40 |
| 37.50 | ±0.60 | 12.50-25.00 | ±0.50 |
| 50.00 | ±0.75 | above 25.00 | ±0.50 (per 25 mm) |
7. Minimum Section Thickness
General: The thickness of the walls depends on the size of the item and the material used. We follow general industry guidelines.
| Material | Minimum wall thickness obtainable |
|---|---|
| 18/8 stainless steels | 1.62 mm |
| 25/12 stainless steels | 1.50 mm |
| Carbon steels | 2.25 mm |
| Cobalt-Chrome alloy | 1.12 mm |
8. Parallel Sections
General: We use specific techniques to keep parts parallel and minimize distortions.
| Gap (mm) | Tolerance(mm) As-cast | Corrected |
|---|---|---|
| 6.25 | ±0.075 | ±0.075 |
| 12.50 | ±0.125 | ±0.100 |
| 18.65 | ±0.150 | ±0.100 |
| 25.00 | ±0.175 | ±0.125 |
9. Other Features
Angles: We can achieve angle accuracy up to ±1/2°, with possible improvements by mechanical adjustments.
Symbols: We can include letters, numbers, and other designs either raised or indented.
Other Details: Features like serrations, splines, and gear teeth can be added under certain conditions.