Quality Assurance Ms Orawan Tanchareon Quality Assurance Manager

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Quality Assurance Ms. Orawan Tanchareon Quality Assurance Manager My safety declaration; Unsafe No start!

Quality Assurance Ms. Orawan Tanchareon Quality Assurance Manager My safety declaration; Unsafe No start! 23 rd Annual Supplier Conference 2020 QA & QC Page 1/34

Presentation Outlines 1. Supplier Quality Performance FY 2019 2. Supplier Quality Problem FY 2019

Presentation Outlines 1. Supplier Quality Performance FY 2019 2. Supplier Quality Problem FY 2019 3. SRK-ER Quality Target FY 2020 4. QA Supplier Manual Change Point FY 2020 5. Supplier Development Activities FY 2020 5. 1 Supplier Critical Process Audit 5. 2 Supplier Self Improvement Activity (SSIA) 5. 3 QCC-STIT Activity 6. Request and Information to suppliers 7. Supplier Quality Assurance Organization 23 rd Annual Supplier Conference 2020 QA & QC Page 2/34

1. Supplier Quality Performance FY 2019 (Apr’ 2019 – Mar’ 2020) 23 rd Annual

1. Supplier Quality Performance FY 2019 (Apr’ 2019 – Mar’ 2020) 23 rd Annual Supplier Conference 2020 QA & QC Page 3/34

1. Supplier Quality Performance FY 2019 Group Metal Group A Target FY 2019 Performance

1. Supplier Quality Performance FY 2019 Group Metal Group A Target FY 2019 Performance FY 2019 (Apr’ 19 -Mar’ 20) Result 0. 24 ppm 0. 22 ppm O 1. 00 ppm 0. 74 ppm O 0. 10 ppm 0. 04 ppm O 0 Time 4 Times X Metal Group B (NTM, MIT, Mi. T, Sania, TAC, CHW ) Material Other Group Critical Problem (Welding, Heat treatment) Remark : O = Achieve X = Not achieve 23 rd Annual Supplier Conference 2020 QA & QC Page 4/34

1. Supplier Quality Performance FY 2019 Trend of Supplier Achievement Metal A group Target

1. Supplier Quality Performance FY 2019 Trend of Supplier Achievement Metal A group Target < 0. 24 ppm Not achieve 15% NG ppm 7 suppliers 23 rd Annual Supplier Conference 2020 39 suppliers Achieve 85% QA & QC Page 5/34

1. Supplier Quality Performance FY 2019 Trend of Supplier Achievement Metal B group Target

1. Supplier Quality Performance FY 2019 Trend of Supplier Achievement Metal B group Target < 1. 00 ppm NG ppm 3 suppliers 23 rd Annual Supplier Conference 2020 Not achieve 50% QA & QC 3 suppliers Achieve 50% Page 6/34

1. Supplier Quality Performance FY 2019 Trend of Supplier Achievement Other group Target <

1. Supplier Quality Performance FY 2019 Trend of Supplier Achievement Other group Target < 0. 10 ppm Not achieve 10% NG ppm 6 suppliers 23 rd Annual Supplier Conference 2020 51 suppliers Achieve 90% QA & QC Page 7/34

2. Supplier Quality Problem FY 2019 (Apr’ 2019 – Mar’ 2020) 23 rd Annual

2. Supplier Quality Problem FY 2019 (Apr’ 2019 – Mar’ 2020) 23 rd Annual Supplier Conference 2020 QA & QC Page 8/34

2. Supplier Quality Problem FY 2019 Classified by NG type of each suppliers group

2. Supplier Quality Problem FY 2019 Classified by NG type of each suppliers group Metal Group A Metal Group B Classification NG Type (All Supplier) Classification Skip Process. NG Type (All Supplier) Test NG 6% 6% Deformation 12% Appearance 1 st 44% Dimension 19% Skip process 17% Welding 10% Appearance 17% Welding 12% Mix st 20% 1 1 st Dimension 20% Deformation 17% Other Group Classification Part Mix NG Type (All Supplier) Skip process 9% Total Major Claim : 57 cases 9% Weak point of supplier each group: Dimension 36% Appearance st 1 45% Metal Group A : Appearance (44%) Metal Group B : Dimension and Mix (20%) Other Group : Appearance (46%) 23 rd Annual Supplier Conference 2020 QA & QC Page 9/34

2. Supplier Quality Problem FY 2019 Supplier Critical problem Month Sup. MFG No. NG

2. Supplier Quality Problem FY 2019 Supplier Critical problem Month Sup. MFG No. NG case Apr MIT TM-436 B-1 No welding component BHKT TM-519 Welding NG Mi. T MC-035 Welding NG NTM MC-099 -2 Bolt take out Aug Sep 23 rd Annual Supplier Conference 2020 QA & QC Classification NG Cause Jig specification/Managemant 50% Welding parameter control 50% Page 10/34

Critical Problem#1: Problem#1 Component Weld Take Out Abnormal Welding Normal Welding Component weld take

Critical Problem#1: Problem#1 Component Weld Take Out Abnormal Welding Normal Welding Component weld take out Process flow Occurrence Robot Welding Measure ment Item An Occurrence An Out flow QC Inspection EDP Received Root cause QC inspection Packing F/G stock Delivery Countermeasure �Spatter had stuck on magnet of welding jig of component part. �Change cleaning method of spatter from air blow to vacuum cleaning of welding jig. Sensor didn’t stop the machine while have the gap of component part and welding jig 0. 5 mm. Gauge not detect component of part welding have gap over 0. 5 mm. �Change the sensor to detect gap of component and welding jig 0. 5 mm. �Add feeler gauge 0. 5 mm. for detect welding component have gap 0. 5 mm. Lesson learn : Supplier must specify method and frequency for jig cleaning including confirmation method. 23 rd Annual Supplier Conference 2020 Page 11/31

Critical Problem#2 : Bolt Take Off Process flow Set component Item An Occurrence An

Critical Problem#2 : Bolt Take Off Process flow Set component Item An Occurrence An Out flow Occurrence Welding Pull out Inspection Delivery Root cause Countermeasure Welding M/C was changed the control board by using spare board effect to unstable welding condition. There is don’t have change control method. Implement method to verify condition of board control before use. Setting change control method and record after change. �Pull out testing can not detected due to validation frequency is 1 pcs. / lot only. �Increase frequency for test confirm (first-middlelast) by control strength at 16 k. N. min. Lesson learn : Supplier must set standard of change control and specify method to verify condition or confirm product when have any change correctly. 23 rd Annual Supplier Conference 2020 QA & QC Page 12/34

3. SRK-ER Quality Target FY 2020 23 rd Annual Supplier Conference 2020 QA &

3. SRK-ER Quality Target FY 2020 23 rd Annual Supplier Conference 2020 QA & QC Page 13/34

3. SRK-ER Quality Target FY 2020 Supplier Group Target 2020 • Critical problem 0

3. SRK-ER Quality Target FY 2020 Supplier Group Target 2020 • Critical problem 0 time • Metal group A < 0. 20 PPM • Metal group B < 0. 70 PPM (Sania, BHKT, TKD*) • Bolt and Nut • Rubber and Plastic product • Chemical and other product • Rubber compound 23 rd Annual Supplier Conference 2020 < 0. 03 PPM QA & QC Page 14/34

4. QA Supplier Manual Change point FY 2020 23 rd Annual Supplier Conference 2020

4. QA Supplier Manual Change point FY 2020 23 rd Annual Supplier Conference 2020 QA & QC Page 15/34

4. QA Supplier Manual Change Point FY 2020 1. 1 Incoming Inspection Control Supplier

4. QA Supplier Manual Change Point FY 2020 1. 1 Incoming Inspection Control Supplier Responsibility : BEFORE AFTER q No specify q Supplier shall inform to SRK-ER by e-mail before delivery changed product. q Special Tag old revision. q Change “Special Tag” or “Yellow Tag” Specify details of process change notice 23 rd Annual Supplier Conference 2020 QA & QC Page 16/34

4. QA Supplier Manual Change Point FY 2020 2. 1 Incoming Inspection Control Supplier

4. QA Supplier Manual Change Point FY 2020 2. 1 Incoming Inspection Control Supplier Responsibility : BEFORE AFTER q No specify Mill sheet q Send inspection data file and Mill sheet to all QC in charge within 25 th of each month. q No specify q Supplier shall issued cover sheet for monthly inspection data (Cover sheet, see appendix O) and submit to SRK-ER with inspection data. **Mill sheet, Characteristic test result, evidence as specify on inspection record format and send with monthly inspection data. 23 rd Annual Supplier Conference 2020 QA & QC Page 17/34

4. QA Supplier Manual Change Point FY 2020 2. 2 Special Characteristic BEFORE q

4. QA Supplier Manual Change Point FY 2020 2. 2 Special Characteristic BEFORE q No specify AFTER q Supplier shall control process by SPC which Cpk > 1. 67 of SC point refer inspection standard and drawing. q If Cpk < 1. 67, supplier shall take action for improvement. q Supplier must submit result to SRK-ER within every 25 th of each month. 2. 5 Nonconforming Products Control Supplier Responsibility : BEFORE q SRK-ER shall deduct score of supplier monthly evaluation if supplier do not send corrective action report on due date. Abroad supplier : PCAR report 15 days DIR report 15 days 23 rd Annual Supplier Conference 2020 AFTER q SRK-ER shall deduct score of supplier monthly evaluation if supplier do not send corrective action report on due date. Abroad supplier : PCAR report 30 days DIR report 7 days QA & QC Page 18/34

4. QA Supplier Manual Change Point FY 2020 2. 5 Nonconforming Products Control BEFORE

4. QA Supplier Manual Change Point FY 2020 2. 5 Nonconforming Products Control BEFORE AFTER q 7) Supplier Clinic The report for request SRK-ER to restrain all deduct score of Major NC Product after take corrective action completely within 7 work days. And we accept for submit 1 time within 3 months. q Criteria Clinic : Must be not follow to b) Major NC, Main problem : Safety, Functional, Assembly. c) Re-Occurrence problem q Criteria Clinic : Must be not follow to b) Major NC, Main problem : Safety, Functional, Assembly point are concerned inspection standard. c) Re-Occurrence problem (within 3 months) include all part no. refer problem and product type. 23 rd Annual Supplier Conference 2020 QA & QC Page 19/34

4. QA Supplier Manual Change Point FY 2020 2. 6 Supplier Quality Monthly Evaluation

4. QA Supplier Manual Change Point FY 2020 2. 6 Supplier Quality Monthly Evaluation Standard : BEFORE AFTER q Metal Group A q Metal Group B q Other Group 23 rd Annual Supplier Conference 2020 QA & QC Page 20/34

4. QA Supplier Manual Change Point FY 2020 3. SRK-ER Process Change Supplier Responsibility

4. QA Supplier Manual Change Point FY 2020 3. SRK-ER Process Change Supplier Responsibility : Control BEFORE AFTER q Supplier shall submit PCN to QA/SRK-ER before implement date for 3 months and all follow SRK-ER customers requirement (If need). And in case of PCN is concerned to customer (Tooling, Material change) lead time at lease 6 months or refer to customer require. q Supplier shall submit process change survey to SRK-ER every period 3 months. q No specify 4. SRK-ER Improvement Definition : Activity BEFORE q No Specify 23 rd Annual Supplier Conference 2020 AFTER q High Impact Quality (For part SB, SU) : Critical process (Welding, Heat treatment, Plating, Coating) all customer require to control as the critical process. QA & QC Page 21/34

4. QA Supplier Manual Change Point FY 2020 4. 1. 2 Annual audit q

4. QA Supplier Manual Change Point FY 2020 4. 1. 2 Annual audit q Supplier Annual Audit Selection Criteria: BEFORE X No New Supplier? X No Trader or Oversea? Last year annual audit results : rank C, D ? Yes No ***Certified ISO 9001 or ISO/IATF 16949? Yes No NG ppm over target No Yes Self Audit Site Audit AFTER � � 23 rd Annual Supplier Conference 2020 QA & QC Page 22/34

5. Supplier Development Activities FY 2020 5. 1 Supplier Critical Process Audit 5. 2

5. Supplier Development Activities FY 2020 5. 1 Supplier Critical Process Audit 5. 2 Supplier Self Improvement Activity (SSIA) 5. 3 QCC-STIT Activity (STIT : Sumi. Riko Eastern Rubber Thailand Improvement Team) 23 rd Annual Supplier Conference 2020 QA & QC Page 23/34

5. Supplier Development Activities : 5. 1 Supplier Critical Process Audit Objective : 1)

5. Supplier Development Activities : 5. 1 Supplier Critical Process Audit Objective : 1) To prevent NG major case for critical parts flow out to SRK-ER and SRK-ER's customer. (Slip off, Leak, Loosen, Separation and Noise) 2) To confirm process condition, quality of product and traceability. Process type and Audit plan: Target : 1. Field action occurred from critical process = 0 2. Each supplier must be recovered concern case to be complete within 3 month. Remark : If supplier had grade “B” or less, supplier will report for upgrade to achieve target follow escalation step. (N= Month of report) N month : Report by P. I. C team. (Minimum) N+1 month : Report by P. I. C team + management. (Minimum) N+2 month : Report by team + management + top management. (Report to SRK-ER Top management) 23 rd Annual Supplier Conference 2020 QA & QC Page 24/34

5. Supplier Development Activities : 5. 1 Supplier Critical Process Audit Suppliers 20 Critical

5. Supplier Development Activities : 5. 1 Supplier Critical Process Audit Suppliers 20 Critical process Audit Result FY 2019 Target : grade “B” up 15 10 5 Weak point Process Heat treatment Arc welding Projection welding 0 Not achieve (1 st audit result) 17 Heat treatment Achieve 11 5 2 Arc welding Projection welding Occurrence Out flow There’re not action/investigate problem when found abnormal value/data or found out of action line on trend chart. There ‘re not training basic knowledge of Heat treatment for all operator. 1. There ‘re not evaluation and implemented for the deviation of wire aim position. 2. There’re not evidence for trial condition and frequency change electrode(tip). 1. Inspection standard specify not cover reference Dwg or some items incorrect. 2. There ‘re not training basic knowledge of welding for all operator. There’re not control projection diameter (width) & height. Testing method is not controlled all point of projection weld. Action : Supplier shall study audit check sheet and implement before start MP. SRK-ER will apply audit check sheet to audit on state of SPTT#3. 23 rd Annual Supplier Conference 2020 QA & QC Page 25/34

5. Supplier Development Activities : 5. 2 Supplier Self Improvement Activity (SSIA) Objective :

5. Supplier Development Activities : 5. 2 Supplier Self Improvement Activity (SSIA) Objective : To level up Quality Performance of supplier to achieve SRK-ER quality target. 1 st Half FY 2019 2 nd Half FY 2019 Supplier Members : 6 Suppliers CH. W, SANIA, MIT, TAC, Mi. T, NTM Supplier Members : 5 Suppliers SANIA, MIT, TAC, Mi. T, NTM Target : NG ppm 1. 00 ppm Target : NG ppm 0. 24 ppm SSIA 1 st Half FY 2019 Result : SSIA 2 nd Half FY 2019 Result : Achieve Not achieve (Metal Group B target) Kick off 1 5 Genba check suppliers Suppliers Final present 23 rd Annual Supplier Conference 2020 (Metal group A target) Kick off QA & QC 4 1 Genba check suppliers Suppliers Monthly report Page 26/34

5. Supplier Development Activities : 5. 2 Supplier Self Improvement Activity (SSIA) : 1

5. Supplier Development Activities : 5. 2 Supplier Self Improvement Activity (SSIA) : 1 st, FY 2020 Objective : To level up quality performance of supplier to achieve SRK-ER quality target. FY 2020 Schedule: Criteria for selection : 2 nd half of FY 2019 NG time flow out ≥ 3 times & NG ppm ≥ 1. 0 ppm of SRK-ER volume. (include CAR, PCAR, Clinic) 1 st half Target FY 2020: Defect ppm < 0. 70 ppm NG time ≥ 3 times Sania BHKT TKD NG ppm ≥ 1. 0 ppm - For 2 nd half year SRK-ER will summarize supplier claim result to select to do SSIA. - If member of 1 st half year don’t achieve target, they will be selected to do SSIA again. 1 st half SSIA Kick off meeting SRK-ER will inform you by e-mail. 23 nd Annual Supplier Conference 2020 Page 27/34

5. Supplier Development Activities : 5. 3 QCC-STIT Activity STIT : Sumi. Riko Thailand

5. Supplier Development Activities : 5. 3 QCC-STIT Activity STIT : Sumi. Riko Thailand Improvement Team Objective : To improve the process “ Safety, Quality, Delivery, Cost” by QC tool and Team work. 29 th Summary Result QCC-STIT for SRK-ER FY 2019 Registrations First Presentation Shop Floor Final Presentation 59 48 23 10 How to join us? 29 th Summary Result QCC-STIT for Supplier FY 2019 Join Presentation Join Observation 2 (SNN, Daiwa) 16 Step 1 : SRK-ER send QCC-STIT Presentation’s letter to suppliers within September 2020 Step 2 : Suppliers reply QCC-STIT Presentation’s confirmation document to SRK-ER Step 3 : Suppliers come to SRK-ER for QCC-STIT Final presentation on November 2020 For FY 2020, Corporate QCC activities to improve Quality and increase productivity Contact : Ms. Wiparat Pontang (QA. Sr. Supvervisor) p. wiparat@er. sumiriko. com Ms. Kwanta Boonchuay (QA Staff) b. kwanta@er. sumiriko. com Tel : 038 -927500 Ext. 137 Fax : 038 -927599 23 nd Annual Supplier Conference 2020 Page 28/34

6. Request and Information for suppliers 23 rd Annual Supplier Conference 2020 QA &

6. Request and Information for suppliers 23 rd Annual Supplier Conference 2020 QA & QC Page 29/34

6. Request and Information for suppliers 6. 1 Request supplier control NG flow out

6. Request and Information for suppliers 6. 1 Request supplier control NG flow out to achieve Quality Target. 6. 2 Request to quick response and take action to prevent re-occurrence when quality problem occurred. 6. 3 Request send monthly inspection data, Mill sheet and SPC control of SC point of mass production stage by E-mail within 25 th of each month. 6. 4 Request send full lay out inspection result to SRK-ER within 31 Oct, 2020 and keep sample part for 1 year at supplier site. 6. 5 For Supplier Evaluation, If you have any questions of Quality evaluation score, please contact QA SRK-ER in charge within 3 working days. Otherwise, you can not request to revise score. 23 rd Annual Supplier Conference 2020 QA & QC Page 30/34

7. Supplier Quality Assurance Organization 23 rd Annual Supplier Conference 2020 QA & QC

7. Supplier Quality Assurance Organization 23 rd Annual Supplier Conference 2020 QA & QC Page 31/34

7. Supplier Quality Assurance Organization Mrs. Saranya Sakorncharoen QA GM s. saranya@er. sumiriko. com

7. Supplier Quality Assurance Organization Mrs. Saranya Sakorncharoen QA GM s. saranya@er. sumiriko. com Mobile: 08 -6 -349 -5191 IQC (IPP) IQC (ESIE) Mr. Worapong Pancheang QA Asst. MGR p. worapong@er. sumiriko. com Change Mobile: 080 -9412 -204 Mr. Apinan Sitthivech QA Supervisor s. apinan@er. sumiriko. com Mobile: 089 -821 -2779 Mr. Hemmarach Sangsawang QA Dept. MGR Change s. hemmarach@er. sumiriko. com Mobile: 086 -804 -3264 Mr. Apinan Sitthivech QA Deputy Supervisor s. apinan@er. sumiriko. com Mobile: 089 -821 -2779 Ms. Jiraporn Permtawee QA Asst. supervisor pe. jiraporn@er. sumiriko. com Mobile: 094 -552 -7394 Mrs. Sangdaw Srimai QA Asst. supervisor s. sangdaw@er. sumiriko. com Mobile: 085 -350 -2782 Mr. Wattana Herakhun QA Sr. Leader qareceiving@er. sumiriko. com Mobile: 098 -204 -4437 Mr. Pongpan Panurach QC Leader sqa_esie@er. sumiriko. com Mobile: 098 -293 -4820 Change 23 rd Annual Supplier Conference 2020 QA & QC SQA Audit/ PCN/ Activity / Evaluation Ms. Orawan Tancharoen QA Manager t. orawan@er. sumiriko. com Mobile: 081 -004 -224 6 Ms. Jutamas Pisuthipoch QA Dept. Supervisor p. jutamas@er. sumiriko. com Mobile: 086 -403 -5985 Mrs. Jureerat Chuachun QA Asst. sr. staff s. jureerat@er. sumiriko. com Mobile: 092 -618 -3858 Ms. Charanyapat M. QA Engineer m. charanyaphat@er. sumiriko. com Mobile: 087 -567 -6604 Page 32/34

Safety First Quality must KAIZEN Q Forev er TE AM AIM 23 rd Annual

Safety First Quality must KAIZEN Q Forev er TE AM AIM 23 rd Annual Supplier Conference 2020 QA & QC Page 33/34