Background and core objectives of the issue

The Processing Points for 303,304,316 and 17-4PH stainless steel are concerned with different levels of carving, processing hardening, corrosive resistance and thermal treatment of stainless steel. For custom CNC parts, size is only the basis, and the real goal is to stabilize the parts in assembly, operation and re-procurement. The engineering team should first describe the application scene, match objects and consequences of failure, and then determine which features need to be controlled.

In assessing the project, the purchaser should not only compare the unit price and the cut-off period, but also confirm whether the supplier understands the different carving, processing hardening, corrosive resistance and thermal state of stainless steel, and whether it can provide DFM advice, process logs, and traceable evidence of detection. Clarifying functional priorities can reduce unnecessary high-precision requirements and avoid flooding critical requirements by ordinary dimensions.

Chart requirements and functional features

The drawings should specify the material plate number and state, the main baseline, the critical dimensions, the public transport, the surface roughness, the edge treatment and the final acceptance state. Around the different stainless steel cutting, processing hardening, corrosive resistance and thermal handling states, the focus needs to be on the characterization that directly affects the assembly and performance, specifying whether the requirements are after machine processing or after heat treatment, surface treatment or cleaning.

The 2D drawings and the 3D model must remain in the same version. For holes, collages, seals, screws, or appearances, they should be supplemented with measurements of location, baseline relationship, and permissible status.

Processing routes and process control

Process planning should, to the extent possible, allow key features to be performed in a uniform baseline and fewer loads, with clear rules for knife life, tightness, cutting heat, scraping and intermediate testing.

The first of the CNC material processing projects must represent the actual production conditions. Once the material, equipment, packaging, procedures and detection methods have been approved, they should be subject to version control; any change in the cutting, processing hardening, corrosive resistance and thermal state that affects different stainless steels should be reassessed and confirmed before the bulk continues.

Common risks and preventive measures

The main risks to the subject are: scalding, broken blades, and surface pulling as a result of slashing and scraping. Often, such problems are not immediately exposed on a single size, but occur when assembly, surface treatment, or batch overlap.

Precautionary measures should include the identification of those responsible, inspection nodes, and unusual response rules.

Method of detection and basis for acceptance

The following acceptance methods are recommended: verify material, hardness, size, roughness and passivation requirements. The test method must be consistent with the drawing definition, and the resolution and uncertainty of measurement should be met; for complex baseline relationships, priority should be given to characterization reports rather than to simple qualified conclusions.

If the customer and the supplier use different equipment or methods, agree on the matching rules prior to production.

Recommendation for implementation of request for quotations and volume

The request for quotation information shall contain at least 2D drawings, 3D documents, materials, quantities, key public transport, surface treatment, application instructions and target exchange periods, with a special indication of the cut-off, process hardening, corrosive resistance and heat-processing state of different stainless steels. The more complete the information, the more reliable the process assessment, quotation and submission judgement.

Repeated orders do not default that all conditions remain the same, and the drawing version, quantity, material supply and processing requirements should be reconfirmed.

Project evaluation: Please send 2D drawings, 3D documents, materials, quantities, key public transport, surface treatment and application requirements to chenyongxing@xc-cncprecision.com, for which we can provide the DFM evaluation.