DFM, tolerances and quality
What is your reject rate?
Answer
quality_claims: {"tolerance_0_001mm":{"status":"conditional","text":"Selected critical machined features where process, geometry, material and inspection conditions allow; confirmed from the drawing.","scope":"drawing-confirmed"},"reject_rate":{"status":"no_formal_kpi","note":"Owner confirmed there is no formal rejection-rate KPI, so no percentage is published. Wording used: recorded per lot and reviewed in quality routines."},"delivery":{"status":"monitored_against_schedule","note":"No 'zero late deliveries' claim published."},"quote_response":{"status":"typically_24h","note":"Stated as typical, China Standard Time."},"dfm_feedback":{"status":"after_review","note":"Issued after the engineering review; no fixed hour promise."}} contact_email: "shawn@balford.net" contact_phone: "+86-135-8846-2222"
Sources
- Verified company facts and boundariesquality_claims: {"tolerance_0_001mm":{"status":"conditional","text":"Selected critical machined features where process, geometry, material and inspection conditions allow; confirmed from the drawing.","scope":"drawing-confirmed"},"reject_rate":{"status":"no_formal_kpi","note":"Owner confirmed there ...
- Choosing a Metal Stamping Manufacturer or Supplier in ChinaConsistency across samples — measure the same dimension on all samples; spread indicates instability. Material verification — request the mill certificate and, for critical applications, a third-party spectro analysis to confirm the alloy. Questions to ask with the samples How many tooling trials we...
- Metal Stamping Defects: Causes and Solutions | BalfordWhy does my stamping supplier have a high scrap rate? High scrap usually traces to one of five areas: incoming material variance (thickness, hardness, coating), unstable process parameters (press speed, lubrication, die temperature), tooling wear or damage that goes undetected between maintenance cy...
- Stamping Washer Design Guide | Balford5. Generate tooling drawings: Produce the general assembly and detail drawings for the die, including material specs, heat treatment, and surface finish requirements, so the toolroom can build it right the first time. 6. Manufacturing and debugging: Build tooling per the approved drawings, then run ...
- Monel 400 Deep Drawing & Machining | BalfordMaterial cost dominates. The alloy price sits far above stainless, so scrap rate has a disproportionate effect on piece price. Nesting and blank size matter more than the press rate. What We Would Evaluate at Balford If a Monel 400 enquiry fits what our equipment can physically do, this is the scope...
- Balford: Deep Drawn, Stamped & Machined Metal ComponentsFor automotive and industrial buyers, a part is not approved until the paperwork is approved. Balford's standard package for new programmes includes: We do not publish a rejection-rate percentage or a "zero late delivery" promise, because there is no formal KPI behind either claim. What we do publis...
What an engineer still needs from you
- material and material condition (grade, temper)
- material thickness, plus the key diameter, height and wall thickness
- tolerances, burr direction and the visual acceptance standard
- annual volume - it decides whether tooling is single-hit, progressive or transfer
- surface finish, and any secondary machining, annealing or plating
Submit a drawing / RFQDFM review
Related questions
- What is DFM and what does a manufacturability review cover?
- What information do you need for a metal stamping RFQ?
- How do I read a metal stamping tolerance chart?
- Which GD&T controls matter most on a drawn or stamped part?
- What PPAP level is normally submitted and what is included?
- What is first article inspection and when is it required?
This page is an engineering answer, not a quotation and not a dimensional acceptance. It is generated from Balford's published material and held to the verified company fact sheet.