01 / 10 · Mold split before tooling

Sand Casting Parting Lines Around Flanges and Clearances

When sourcing a sand-cast flanged housing, agree the mold split before tooling places a joint beside a gasket face or tight assembly clearance. Relia reviews the parting route, local cleanup and finishing stock against your mating envelope.

Relia reviews the mold joint, local finishing and machining stock with your flange sections. Protected surfaces and clearance envelopes stay visible in the tooling decision.

Review your flange and mold split
Recessed circular housing with external lugs and central spoked opening
A housing flange, lugs and recesses give the mold split several different local constraints.

02 / 10 · Factory design review

The Mold Split Must Respect the Assembly

Relia connects the proposed parting arrangement to the delivered component, including surfaces that remain cast and those finished by machining.

Assembly envelope

Show nearby parts and protected contacts.

Proposed mold joint

Mark its route around the component.

Finished result

Agree cleanup and machining boundaries.

Angled connector with a collar and two-hole mounting flange
The flange contact and neighboring collar need a defined working envelope.

03 / 10 · Assembly definition

Gasket Faces and Clearance Envelopes

Identify the sealing contact, bolt access and the space required by neighboring parts. Mark the region that must remain available after casting cleanup and machining.

Include the final supplied condition, especially where a finish or coating affects the interface. A general external dimension does not define every restricted clearance.

Review pump-housing flange and bore interfaces

04 / 10 · Mold arrangement

A Proposed Parting Line on the Drawing

The parting line is the meeting region of mold sections. Its location affects pattern withdrawal, casting shape and the area requiring joint cleanup.

Upper mold region
Proposed parting region
Lower mold region

Schematic arrangement only; the actual split follows the agreed component proposal.

Review the complete line around the component

Show the parting route through flanges, lugs and recesses. Relate it to each protected interface rather than approving it from one outside view.

05 / 10 · Joint finishing

Flash and Cleanup at the Mold Joint

Define the required local condition after joint cleanup. Separate removable flash from a positional step or another geometric condition that needs its own acceptance discussion.

Specify cleanup boundaries where access is restricted or a nearby edge must remain protected. Avoid treating aggressive material removal as the default answer to every joint condition.

Open cylindrical frame with horizontal bands, rectangular windows and supporting feet
Windows and bands create local cleanup regions with different access.

06 / 10 · Finished flange

Stock Reserved for Finished Flange Faces

The casting blank

Retain the local material needed for the agreed finishing operation.

The final contact

Define the finished face, edge and interface requirements on the drawing.

Connect the stock to the machining references. The flange should reach its required condition while preserving the surrounding wall and clearance envelope.

Review the sand-casting route for your component

07 / 10 · Sample checks

Sample Acceptance in Restricted Areas

Locate the zone

Mark the joint region and protected contact.

Define the check

Agree dimensional, surface or access-related evidence.

Record the result

Identify the sample, drawing revision and supplied condition.

Relia can provide agreed key dimensional records, with characteristics and sampling frequency defined per order.

Circular mounting plate with central hub, fixing pads and drilled holes
A mounting disc separates the central interface from its outer fixing contacts.

08 / 10 · Component references

Flanged Housing and Mounting References

Use the housing, collar or mounting form to begin the discussion. Your drawing defines the actual material, parting proposal and finished interfaces.

View flanged housing and open-frame enquiriesView flanged connectors and iron mounting forms

09 / 10 · Tooling release

Approve Cleanup Boundaries Before Tooling

Before tooling

Agree the parting route, protected envelope and finishing proposal.

Before batch production

Approve sample evidence against the final interface requirements.

Keep any later change to the mold split or local geometry connected to the approved component revision.

10 / 10 · Start the parting review

Share Flange Sections and Assembly Clearances

Send Relia your drawing, material and quantities. Mark gasket faces, tight clearances and any proposed mold split or cleanup region that needs review.

Email the flange sections

Review our manufacturing scope · Explore Relia Casting

Company and address
Relia Casting
No. 96 Shuyuan Road
Qingdao, Shandong, China