Global Casting News

Investment casting machining

2022-03-29

Investment castings after casting process could only reach freedom tolerances itself.For more accurate tolerances,we have to meet by rough machining,some even require secondary machining.To serve our customers better,we have developed a machining line to machine parts we could not reach by investment casting.


Machining advantages of investment castings from Tongda foundry:


*Wide range of machining materials.We could machine various investment castings,either steel,iron,aluminum is workable.
*Advanced machining equipment are equipped,such as CNC,Milling machine,Boring machine,Drilling machine,ect.
*Total production time is saved.We would machine parts directly after casting process.So the lead time is ensured.
*Low machining costs are quoted.Machining service provided is just for better service.
*Further surface finishing process could be offered also after machining investment castings,like painting,powder casting,ect.
*Mature machining technology.Our machining workshop is separated from casting workshop,each workshop is equiped with specialized engineer team to make sure each process is clear .


Machining process

Max dimensions

Diameter

Length

Width

Height

Turning
max.tolerance:±0.01mm

Horizontal

1600mm(outer)

6000mm

 

 

Vertical

2800mm(outer)

1500mm

 

 

Milling
max.tolerance:±0.01mm

 

 

2000mm

2000mm

2000mm

EDM

Die sink

 

645mm

400mm

450mm

Wire
conical up to 20°

 

400mm

800mm

400mm

Honing
max.tolerance:±0.006mm
max surface finish:R=0.1

 

min.

max.

400mm

 

 

3mm

350mm

Grinding
max.tolerance:±0.005mm

Surface grinding
max surface finish:R=0.2

 

1000mm

600mm

 

Spherical grinding
max surface finish:R=0.2

min.

max.

 

 

 

30mm

500mm

Profile grinding
max surface finish:R=0.2

240mm

200mm

40mm

 

Cylindrical grinding
max surface finish:R=0.4

850mm
(outer)

800mm
(inner)

 

 

 

Lapping
max.tolerance:±0.006mm
max surface finish:R=0.1

Round

200mm

1000mm

 

 

Superfinish

700mm

2000mm

 

 

Flat

350mm

 

 

 

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