01 / 10 · Clean edges without losing function

Edge Break and Burr Limits on Precision Cast Interfaces

Keep the sealing land or thin wall intact while removing the unwanted burr. Relia reviews local cleanup and edge-break requirements on precision cast interfaces. Mark the allowed change at hole entrances, shoulders and internal intersections rather than relying on an unrestricted instruction to deburr.

Relia reviews casting cleanup and machining burrs as local geometry requirements. The approved edge map stays with the drawing and sample acceptance.

Review your protected edges

Curved hollow body with side and top flanges and supporting legs — Hole entrances, flange contacts and supporting walls have different edge functions.

02 / 10 · Factory finishing scope

Cleanup That Preserves the Designed Edge

Relia connects deburring to the final component requirement. A general instruction to break all edges is insufficient where an edge controls a seal, a fit or a remaining thin section.

Remove

Specified burrs and unwanted attached material.

Limit

The allowed local chamfer, radius or other edge change.

Protect

Functional contacts and the required remaining section.

Y-shaped hollow fitting with threaded branch ends — Thread starts, passage entrances and sealing shoulders need different local instructions.

03 / 10 · Functional boundary

Sealing Holes and Thin-Wall Boundaries

Identify the sealing mechanism and mating part. Mark the hole entrance, sealing land, thread start and nearby thin regions where finishing can change the intended contact.

Include internal intersections that are not visible from the outside. Specify the required cleanup without assuming that a larger chamfer is always acceptable.

Connect edge cleanup to passage cleanliness

04 / 10 · Controlled edge classes

Edges to Break and Edges to Protect

General edges

Apply the controlled drawing's general requirement where applicable.

Local exceptions

Give explicit dimensions or limits at critical entrances and transitions.

Protected geometry

Retain designated lands, sharp features or minimum wall sections.

Resolve conflicting notes before production. The edge map should make the applicable instruction clear at each critical location.

Define acceptance for inaccessible edges

Agree the permitted tool approach and inspection method. Record any access limitation before approving samples rather than leaving an unseen edge to an undefined general instruction.

Manufacturing detail

A Broad Deburring Instruction Can Damage a Working Edge

Unwanted attached materialState the burr or flash condition to remove after the operation that creates it.

Permitted edge changeSpecify the local chamfer, radius or other allowed break on the drawing.

Protected functional landRetain the seal, locating shoulder, thread start or required remaining wall.

Agree reach and viewing access for internal intersections. Loose debris removal is a separate final-cleanliness responsibility.

Read the manufacturing explanation

An edge break should remove the unwanted sharp or burred condition while preserving the feature’s purpose. Identify sealing edges, locating shoulders and thin walls that cannot accept uncontrolled blending. State the permitted treatment at the actual region and check it after the relevant machining and surface operations.

05 / 10 · Two sources of unwanted material

Casting Cleanup and Machining Burrs

Casting cleanup addresses features such as parting flash or the agreed gate-removal region. Drilling and milling can create new burrs at exits and intersecting openings.

Include the finishing stage after the operation that creates the burr. Removing attached material and removing loose debris are related but distinct parts of the final scope.

Cylindrical fork end with parallel arms and pin holes — A pin-hole exit near a fork slot requires access without thinning the arm.

06 / 10 · Finishing access

Access for Local Finishing

Tool reach

Review the actual entrance, exit and internal intersection.

Protected contact

Keep the finishing action within the approved region.

Agree the method around the material, geometry and delivered condition. A tool that reaches the edge can still affect an adjacent functional surface if its permitted action is undefined.

Connect drilling, milling and final interface finishing

07 / 10 · Evidence for the edge

Sample Visual and Dimensional Acceptance

See the condition

Agree viewing access and the reference for a remaining burr.

Check the geometry

Verify required edge limits and protected material where specified.

Record the scope

Link sample identity, drawing revision and inspected locations.

Relia agrees key dimensional records and sampling frequency per order. A photograph can support the visual discussion but does not replace a required dimensional check.

Oval flange with short neck and one large opening — The opening edge and surrounding flange contact form separate inspection regions.

08 / 10 · Related interfaces

Fitting and Flanged Body References

Use the fitting or flanged-body form to explain the interface. Supply your actual sealing arrangement, edge requirements and protected surface zones.

View flanged body interface enquiries View threaded fitting casting enquiries Separate roughness from visual finish

09 / 10 · Production control

Release the Edge Map with the Drawing

Approved sample

Accepted local edge condition and required evidence.

Repeat release

The same drawing, edge map and finishing requirement.

Customer sample approval precedes batch production. A new seal, hole size or finishing route triggers review of the affected edge instructions.

10 / 10 · Start the edge review

Send Edge Requirements and Protected Surface Zones

Send Relia the drawing, material and quantities. Mark local edge limits, sealing contacts, thin-wall regions and the evidence needed before assembly.

Email the protected-edge brief

Review our manufacturing scope · Explore Relia Casting

Email: [email protected]
Phone: +86 185 6176 2631
WhatsApp: +1 404 203 0971
Company and address: Relia Casting
No. 96 Shuyuan Road
Qingdao, Shandong, China