Manufacturing Korean: 공정, 품질, 수율, 불량품

Core examples: 공정, 품질, 수율, 불량품, 생산라인, 로트, 검사, 재작업, 개선.

Factory Korean is made of compact status nouns

A Korean manufacturing report may say:

2공정 수율 저하 원인은 장비 조건 변경으로 추정됨. 해당 로트는 전수검사 후 불량품을 분리하고 재작업 진행 예정.

This is compressed, table-like Korean. It does not explain the factory. It assumes the reader knows process, yield, equipment condition, lot, inspection, defect separation, and rework.

The key principle is:

Manufacturing Korean is process-state-cause-action language.

공정

공정

process/stage in manufacturing; also fairness in other contexts, so domain matters.

Manufacturing examples:

생산공정 production process

1차 공정 first process/stage

후공정 back-end/later process

공정관리 process management

Learner action: 공정 tells where in production the issue occurs.

생산라인

생산라인

production line.

Related:

라인 가동 line operation

라인 정지 line stoppage

라인 증설 line expansion

작업자 worker/operator

Learner action: 생산라인 language connects process to physical equipment and people.

품질

품질

quality.

Related:

품질관리 quality management/control

품질기준 quality standard

품질문제 quality issue

품질개선 quality improvement

품질 is broad. Reports usually pair it with standards, defects, inspections, or customer claims.

수율

수율

yield.

In manufacturing, 수율 often means percentage of acceptable/good output from production.

Related:

수율 저하 yield decline

수율 개선 yield improvement

양품률 good-product rate

불량률 defect rate

Learner action: 수율 is a metric, not general “profit.”

불량품

불량품

defective product.

Related:

불량 defect/defective condition

불량률 defect rate

불량 원인 defect cause

불량 유형 defect type

양품 good/acceptable product

Learner action: identify defect category and disposition.

로트

로트

lot/batch.

Related:

로트 번호 lot number

해당 로트 relevant lot/batch

로트별 검사 inspection by lot

생산 로트 production lot

Lot language supports traceability.

Learner action: 로트 tells which batch is affected.

검사

검사

inspection/test.

Manufacturing contexts:

전수검사 100% inspection/inspection of all units

샘플검사 sample inspection

외관검사 visual appearance inspection

기능검사 functional inspection

Learner action: identify inspection type and judgment standard.

재작업

재작업

rework.

Related:

재처리 reprocessing

수리 repair

폐기 disposal/scrap

선별 sorting

분리 separation

Rework is a corrective production action, not just “doing again.”

Learner action: determine whether items are reworked, scrapped, sorted, or accepted.

개선

개선

improvement.

Related:

개선조치 improvement/corrective action

공정개선 process improvement

품질개선 quality improvement

개선안 improvement proposal

In factory reports, 개선 should connect to cause and verification.

Manufacturing report table

Example report walkthrough

A라인 3공정에서 불량률이 2.5%로 상승하여 해당 로트에 대해 전수검사를 실시했다.

Breakdown:

A라인 3공정 process 3 on line A

불량률이 2.5%로 상승 defect rate rose to 2.5%

해당 로트 relevant lot

전수검사를 실시했다 conducted 100% inspection

Plain reading:

Because the defect rate rose to 2.5% in process 3 on line A, 100% inspection was conducted for the relevant lot.

Learner action: location, metric, affected batch, action.

Report style

Manufacturing reports often omit full sentence endings:

원인 분석 중 cause analysis in progress

재작업 완료 rework completed

개선 필요 improvement needed

담당자 확인 요청 request for responsible person confirmation

Learner action: table Korean is not broken Korean. It is status compression.

Example bank walkthrough

공정

Process/stage.

Learner action: production step.

품질

Quality.

Learner action: standard and issue.

수율

Yield.

Learner action: acceptable output rate.

불량품

Defective product.

Learner action: problem item.

생산라인

Production line.

Learner action: physical operating line.

로트

Lot/batch.

Learner action: traceability unit.

검사

Inspection/test.

Learner action: method and result.

재작업

Rework.

Learner action: corrective production action.

개선

Improvement.

Learner action: process/quality correction.

Manufacturing-reading workflow

When reading Korean manufacturing text:

1. Identify product or part.
2. Identify line and process.
3. Find metric: 수율, 불량률, 생산량.
4. Identify affected lot.
5. Identify defect type.
6. Find inspection method.
7. Find judgment: 합격, 불합격, 보류.
8. Find action: 재작업, 폐기, 선별, 출하보류.
9. Find cause if stated.
10. Find improvement/corrective action.

Manufacturing issue chain

A factory report should connect process, metric, cause, and action.

This table turns compressed factory Korean into an event map.

Status-shorthand warning

Manufacturing reports often omit full endings.

Short notes are not casual; they are operational status labels.

수율/불량률 distinction

수율 measures acceptable output rate. 불량률 measures defect rate. A report may discuss one improving while the other worsens depending metric definition, stage, and sampling method.

A strong tool for this article would map process issues.

Suggested functions:

1. Process/line detector.
2. Metric extractor.
3. Lot tracker.
4. Defect-type tagger.
5. Inspection method label.
6. Action disposition board.
7. Cause/improvement link.

Final rule

Manufacturing Korean is dense because factories measure everything.

공정 tells stage. 품질 tells standard. 수율 tells performance. 불량품 tells failure. 생산라인 and 로트 locate the issue. 검사, 재작업, and 개선 tell what happens next.

Read the process before translating the noun.