Chapter 7 Material Management

1
Chapter 7Material Management

• Aj-Kulachatr C. Na Ayudhya
• Naresuan University
• Payao Campus
• Semester 1/50

2
Chapter Agenda

• Material Management
• Material Management Goals
• Made or Buy Decision
• Outsourcing Trends
• Discovering Potential Suppliers
• Analysis of Suppliers
• Material Requirement Planning

3
?????????????????????????????Material or Raw
Material

• ?????????????????????????????????????????
  ??????????????????????????????????????????????????
  ???????? ?????????????????????????????????????????
  ?????????? ??????????????????????????
  ????????????????????????
• ??????????????????????????????????????????????????
  ?????????????????????????????????????
• ?????????????????????????????? ???????????????????
  ???????????

4
Material Management

• ??????????????
• ?????????????????????????????????????????
  ????????????????????????????????
  ??????????????????????????????????????????????????
  ????????? ???????????????????????????? ????
  ????????????????? ??????? ?????????????
  ?????????? ?????????????????????????????????
  ??????????????????????????????????????????????????
  ??????? ???????????????????????????????????????
  ????????????????? ????????????????????????????????
  ????? ?????????????????? ?????????????????????????
  ????? ???????????????????????????????????
  ????????????????????????? ????????????????????????
  ??????? ??????????????????????????????????????????
  ?????? (Material Requirement Planning MRP)
  ????????????????????????????????????????
• ???????????????????????????????
  ????????????????????????? ????????????????????????
  ?????????????????????????? ???????????????????????
  ?????????????????????????? ??????????????????????
  ????????????????????????????????????????????
  ??????????????????????????????????????????????????
  ?????????

5
Material Management Goals

• ????????????????????????
• Low Cost ???????????????????????????????????????
  ????????????????????????????????????? ????
  ????????????????????????????
• Quality Assurance (QA) ?????????????????????????
  ????????????????????? ????????????????????????????
  ??????????????????????????????????????????????????
  ??????????????? Lot
• High level of service ??????????????????????????
  ?????????????????? ???????????????????????????????
  ???????????????????????????? ????
  ?????????????????????? ?????????????????????????
  ????????????????????? ??????? ???????
  ?????????????????? ???????????????

6
Material Management Goals

• ???????????????????????? (???)
• Low of inventory cost ??????????????????????????
  ??????????????????????????????????????????
  ?????????????????????????????????????????????????
  ???????????????????????
• Support purchasing ?????????????????????????????
  ?????? ???????????????????????????????????????????
  ??????????????? ????????????????????????????
  ??????????

7
????????????????????????????????????
Buy Material
Buy Material
Made
Buy Material
?????????????????????????????????????????
(Outsource) ?????????????????????? (Made)
8
Made or Buy Decision

• ??????????????????????????
• ??????????????????????????????????????????????????
  ????????? ??????????????? ??????????????????
  ?????????????????????????????????????????????
  ?????????????????????? ???????????????????????????
  ????????????????????????????????
  ???????????????????????????????
  ??????????????????????????????????
• ??????????????????????????????????????? ????
  ?????? ?????? ?????? ??????????????
  ??????????????????????? ??????????????
  ????????????????????????????????
  ???????????????????????????????????????

9
???????????????? (Cost) ?????????????????????????
?????????????????????????????????? (Make or Buy
Break even Analysis)
Material amount/y

• TC (Make) Fc VcVc (vc x D)
• TC Total Cost
• D Demand
• VC Unit variable cost
• Fc Fixed Cost

TC(buy)
TC(make)

• TC (Buy) PD
• P Unit price
• D Demand

FC(make)
A
Demand/y
??? Demand gt A ?????????? (Make) ??? Demand lt A
??????? (Buy)
10

• ??????????????????????? ????????????????????????
  ???????????????? ????????????????????????????????
  ?????????????????????? ??????????
  ????????????????????????????????????????????????
• ?????????????? ?????????????????????????????????
  ????????????? ????????????????????????????????????
  ?????????????????????????????? ???????????????????
  ??????????? ??????????????????????????????????????
  ????????????????????
• ??????????????????????? ????????????????????????
  ?????????????????????????????????
  ???????????????????????????
• ?????????????? ?????????????????????????????????
  ????????????????? ?????? ????????????????????????
  ?????????????????????????????????????????????????
  ????????????????????????

11

• ??????????????????????????????????????
  ??????????????????????????? ??????????????????????
  ????????????????????????? (Entry Barrier) ????
  ?????????????????????????????????????
• ??????????????? (Reliability)
  ???????????????????????????????????????
  ???????????? ?????????????????????????????????????
  ??????????????????????????
• ????????????????????????? (Inventory Control)
  ?????????????????????????????????
  ????????????????????????????????????????????

12
Factor for Made or Buy

• ????????????????????????????????
• ????????????????
• ??????????????????????
• ????????????????????????????????
• ???????????????????
• ??????????????????????
• ??????????????????
• ?????????????????????????
• ??????????????????????????????

• ?????????????????????????????
• ???????????????????
• ????????????????
• ??????????????????????
• ??????????????????
• ?????????????????????????????????????????????????
  (VMI)
• ???????????????????????????????????????????
  (Access Supply)

13
Outsourcing Trends???????????????????????????????
?????????????????????????? ???????????????????????
????????????????????????????????? Outsource
????????????????????

• ???????? Outsource ????????????
• Website
• Catalogs
• Trade Register
• Directories
• Trade journals
• Phone Directories
• Sales Personal
• Trade Show
• Professional Organizations

• ??????????????????????????
• ?????????????????????
• ???????????????????????????????????
• ?????????????????
• ??????????????????????
• ????????????????????????
• ??????????????????????????
• ??????????????????????????

14
Analysis of Outsource /Suppliers

• ????????????????????
• ????????????????????
• ?????????????????????
• ???????????????????
• ?????????????????????????????????
• ?????????????????????????? IT
• ?????????????????????????????????

15
Material Requirement Planning MRP

• ???????????????????????????????????????????????
  ???????????????????????????????????? ??????
  ???/??????????????????? ?????????
• ???????????????? MRP ???????????????????
  ??????????????????????????????????????????
  (Assembler to order) ?????????????????????????????
  ????????? ???????????????????????????????????
  ??????????????

??? 18 ???
Trunk 1
???????? 1
16
Material Management Structure
17
MRP Components
Master Production Schedule
Inventory Master File
MaterialRequirement Planning
ProductStructureFile
Planned Order Releases
P/O
Reschedule Notice
Work Oder
18
Input Components
Master Production Schedule MPS
Inventory Master File
ProductStructureFile
MPS ???????????????? ??? ???????????????????????
???? ???????? ??????????? ?????????????
?????????????????????????? Bill of Material
????????????????????????????????????????????
?????????????????????????????????????????
(Parents) ????????????????????????????????????????
?? (Child)
?????????????????????? ?????????????????????????
???????????????????????????????????????????
???????????????????? ????????????????????????????
????????????????? ????????????????????????????
????????????????????
19
Bill of Material (BOM)
20
Bill of Material (BOM)
21
Bill of Material (BOM)
22
Processing Unit

• MRP ??????????????????????????????????????????????
  ???????? ?????????????????????????????????????????
  ??????????????????????????????????????????????????
  ??????????? ??????????????????????????????????????
  ????????????????????????????????

?????????????? (Gross Requirement)??????????????
??????????? (Schedule Receipts) ??????????????
(Available Balance or On Hand)????????????????
(Net Requirement) ???????????????????????
(Planned Order Receipts)
MaterialRequirement Planning
Planned Order Releases
??????????????? (Planned order Releases)
23
MRP Programming Part No.__________ Lot Period of Time (Week or Month) Period of Time (Week or Month) Period of Time (Week or Month) Period of Time (Week or Month) Period of Time (Week or Month) Period of Time (Week or Month) Period of Time (Week or Month)
MRP Programming Part No.__________ Lot 1 2 3 4 5 6 7
Gross Requirement
Schedule Receipts
Available Balance
Net Requirement
Planned Order Receipts
Planned order Releases

• Available Balance S ??????????????????????????
  ?????????????
• Net Requirement G S A

24
Outputs Components

• ??????????? ??????????
• ??????????????????????????? (Purchase Orders
  P/O , Work Order) ????????????????????????????????
  ??????????????????????? ??????????
• ????????????????????????????????
• ????????????????????????????? (Planned order
  releases)
• ????????????????
• ??????????? (Rescheduling Notice) ??????
  ??????????????????? MRP ????????????????????????
  ??????????????????????????????????????????? ????
  ??????????????? ????????????????????? ???????

P/O
Reschedule Notice
Work Order
25
??????????

• ????? ?????????????. ?????????????????????????????
  ???
• ??????????????????????????,--????????
  ?????????????, 2546.
• ????? ?????????,?????????? ?????????.
  ??????????????????????????????
• ?????????????????????. --????????
  ??.???.???????????????, 2550.