Reduce breakdown by use of long life RAGA core pin
Core pins used to create holes in die casting are fitted & part of a die casting mold
Precisely machined and ground custom pins are made from high quality DIN 1.2344/AISI H-13
Vacuum Heat treatment, nitriding & coating enhances life of the core pins
Jet cooled (JC) core pins are an integral & most important part of the jet cool system
Casters prefer RAGA JC Core pins for their life and deep hole concentricity
Custom mode pins go through stringent quality checks to ensure straightness of holes & dimensions
Surface treatments like Nitriding & coating ensures higher life
FEATURE
Hole: Min Dia 2.5mm & Max length 600mm,
Casting Dia: Min 4.5mm, Coating options available
| Material | Recommended Hardness (HRC) | Remark |
| H13/DIN 1.2344/SKD61/STD61 | 44-47 | General material for Die casting core pins |
| Oravar 2 | 44-48 | Uddeholm (Assab) Orvar 2 is general die casting core pin material |
| DAC | 42-50 | Hitachi brand general die casting core pin material |
| Orvar Supreme | 44-48 | Uddeholm (Assab) Orvar Supreme is ESR grade, Good for heat check resistance |
| DAC-S | 46-50 | Hitachi DAC-S is ESR grade, Good for heat check resistance |
| DAC – Magic | 46-50 | Hitachi DAC- Magic have High toughness, and High thermal strength |
| Dievar | 44-46 | Uddeholm Dievar is have High-toughness, High temperature strength,High heat resistance |
|
Surface treatment |
Treatment method |
Treatment temp. ͦ C |
Heat resistance temp. ͦ C |
Surface Hardness (HV) |
Thickness/ Depth of surface treatment (µm) |
Water resistance |
Heat resistance |
Seize resistance |
Erosion resistance |
Corrosion resistance |
Fatigue resistance |
|
|
CrN |
PVD |
500 |
700 |
1800-2200 |
2-3 |
✓ |
✓ |
✓ |
||||
|
TiN |
PVD |
550 |
550 |
1800-2200 |
2-4 |
✓ |
||||||
|
TiAIN |
PVD |
550 |
800 |
2800-3300 |
2-4 |
✓ |
✓ |
|||||
|
LUMENA |
PVD |
500 |
900 |
3400 |
10 |
✓ |
✓ |
✓ |
✓ |
|||
|
ALCRONA |
PVD |
500 |
1100 |
3200 |
6 |
✓ |
✓ |
|||||
|
Nitriding |
Nitriding |
550 |
500 |
800-1200 |
40-100 |
✓ |
✓ |
|||||
Raga have inhouse gun drilling machine
Raga give 100 % inspection report of hole concentricity for Jet cooled core pin.
Hole Diameter : Ø2, Ø2.5, Ø3, Ø3.5, Ø4, Ø4.5, Ø5, Ø6 mm
Hole Length: Max. 600mm.
Hole Length/Diameter Ratio : 110
Outer Diameter: Min Ø4 mm & Max Ø300 mm
Concentricity : 0.3 TIR
Two Polishing option with Raga core pin
Draw Polish: Ra – 0.08 µm,This will help to eject casting smoothly
Fine Polish: Ra -0.03 µm, Help to minimize reduce soldering.
Core pin breakage is a critical concern in die casting processes, as it can lead to major accidents. Detecting core pin breakage before the introduction of water in the High-Pressure Die Casting (HPDC) cycle is crucial to preventing such accidents.
The Raga Pin Breakage Detection Device (PBDD) plays a pivotal role in ensuring safety during casting operations. This innovative device utilizes an air cycle during casting injection to promptly identify any breakage in the core pin. By doing so, it provides an early warning system, enabling timely intervention to avert potential disasters.
One key advantage of Raga Pin Breakage Detection is its contribution to a safe environment for jet cooling. By swiftly detecting core pin breakage, the device facilitates a proactive approach to safety, allowing for effective management of the casting process.
Investing in the Raga Pin Breakage Detection Device not only enhances safety protocols but also safeguards against the consequences of core pin breakage, ultimately ensuring a secure and efficient die casting operation.
Did You Know That 47 % Customer Don’t Pay Attention To Design Of Core Pin Which Is A Major Cause Of Lower Core Pin Life & Jet Cooling Efficiency
It’s Time To Avoid These Mistakes With Raga
One of the Die caster in India had a problem with core pin breakage after 2676 shots.
Raga studied and observed Core pin chamfer at starting of casting area -0.35 mm. The draft angle in core pin 0.75 °
Raga modify core pin design, Increases chamfer to 2 mm & draft angle 1.5°, and sends for approval.
The customer approved the design and gave the order. Raga supplied the core pin.
After the trial customer reported first core pin broke after 12476 shots.
A Die caster in India had reported frequently soldering issues in 2 core pins of one mold.
Raga studied and observed after 673 shots core pin temp was rising up to 590°C. The core pin material was H13 and no surface coating.
Raga supplied core pins with high thermal conductivity hot die steel, Mirror Polishing and PVD coating.
Die caster run these core pins and reported no soldering issue upto 6572 shots.
One of the biggest die casting mold manufacturers in Taiwan had their mold deliveries delayed. This was due to 8 to 10 weeks delivery lead time from their existing Core pin supplier.
Raga had a detailed discussion with the customer understanding their material, surface treatment and monthly consumption. Raga’s dispatch period of 4 to 6 weeks helped them dispatch their molds in time.
