Proceedings of the Pre bid Conference held on 11.1.12
Contents
1. Entrance Door Hydraulic Solutionizing Furi I 2 NOTE ALL DIMENSIONS IN METER ALE2. H 1100 59346 240415 100 to 125 H 1150 62146 95 to 120 1 Solution Treatment Heat to 899 C hold at heat for a time commensurate with cross sectional thickness and quench in oil water or other medium acceptable except that product 0 25 inch 6 35mm and under in nominal diameter or distance between parallel sides may be air cooled from the solution heat treating temperature AMS 5737 Corrosion Resistant Steel Bar Stock 98 4 minimum 2 Precipitation heat treatment Heat to a temperature 704 C 10760 C hold at heat for not less than 16 hours and cool in air 1 Solution Treatment Heat to 9827 C hold at heat for a time commensurate with cross sectional thickness and quench in oil water or other acceptable medium AMS 5731 Corrosion resistant Steel Bar stock 91 0 minimum 2 Precipitation heat treatment Heat to a temperature 718 C hold at heat for not less than 16 hours and cool in air PART E Reply to Queries raised by M s Welmach Engineers Bangalore SI Query Reply No 01 Both for Option I and II please indicate the net loading per batch Net part loading is 75kg excluding weight of the basket 02 As per the Technical specification given in the tender Document The trials for approval testing involve evaluating for Option the test load is mentioned as sheet metal component components of
3. HEAT TREATMENT PROCESS PARAMETERS LLA I LOT Designation Anneal Normalise Harden Temper Specification C re Kg mm o Cr Mo Steel 845 870 870 930 845 885 675 sheet Furnace Cool Air Cool Oil Air Cool AMS 6350 Quench 565 Air Cool MIL S 18729 98 3 112 2 495 Air Cool 4130 Cond A N 112 2 455 1255 Air Cool 125 5 140 385 Air Cool Over 140 370 lt Air Cool 845 885 85 min 550 Air Oil Quench 565 Water Quench 495 Water Quench 105 4 385 Water 126 5 Quench 600 C hold 360 C hold for 30 MIL S 6758 SAE 4130 Cr Mo Steel Bar Rod 845 870 Furnace Cool 870 925 Air Cool MIL T 6736 B Cr Mo Steel Tube 845 870 Furnace Cool Below 495 870 925 Air Cool Quench AISI 4340 790 840 AMS 6359 for 30 minutes raise to minutes 420 C45 C hold for 30 raise to minutes and air cool 820 C hold for 20 min and oil quench HEAT TREATMENT OF FERROUS ALLOYS NAL NAP 028 Appendix 028 01 page 2 of 2 Precipitation Heat Treatment Air Cooled parameters Temperature H 900 482 6 v Time in minutes 045 V UTS Imm AMS 5659H 130 to 160 o H925 49646 240157 125 to 156 Solution Heat H 1025 55246 240 415 110 to 140 ted Bi Sud H1075 579 6 240 15 105 to 127
4. 005 uv 87 SLT GF OES upe 104 SW ST snid 8F OTV 133 91 7809 eipaui OOD 322u1N4 4H T e EE gt youanb _ i m se JAM j NOISNYLXI i ss Suva say ZT 6 0095 32eUJNj 1 z LL si FA s 505 1009 JJHT 8ROIW taai TS9L YTOZ L L y r 133HS 791 sMTES g 541 aw GE S0S 1009 332U1N4 JH T 87 OL 1 91S9T1 002 JV guryeos 91 VTOZ an a sell 404 M a _ jqeL E E joasay Ved dwa jo wwg jeuonippe 26 0SZ V00 cL Shep Y wooy gt S6V Upea 104 s w ST SNIA 87 01 ald TSEL VZOZ 009 eund 4H T d 1 ed dwa 10 come eaoe ISSE VOD Zvl skept wooy ST S6V U5ea 10o syw ST snd 87 OTV uo 3v 0S5Z V00 S133HS 1 VCOT Joop a2euinj JH T 3ui 002 3 polled suiyeos quawyeost uoreydioedd u wze 1 1 UORNIOS poyjaui 3uij009 pue BUDjEOS Buije3UUV uoi382141223dS enaze C elieving i 282C Hour Maximum upto 250 s required the following notes can be referred 3702C for a period of 30 60 minutes In case recovery annealing stress r be 350 ure shall 1 The annealing temperat II be 350 3702C for a period of the annealing temperature sha ver 6mm thickness 2 For sheets and tubes O f for each additional 6mm or part thereo 30 60 minutes plus 15mts PART C HEAT TREATMENT OF FERROUS ALLOYS NAL NAP 028 Appendix 028 01 pagel of 2
5. may lead to serious accidents We will propose a different design which will be deviation from the proposed technical specification 05 Point 7 under section II Construction details the tender Maximum weight of a charge is 75Kg specifies to supply three 3 Nos SS basket made of SS grill excluding basket weight mesh as per sizes provided in Point 2 1 under Scope of Minimum dimension of the component is works However to design and manufacture the basket and 20mmX20mmxX 2 5mm Thick determine the grills mesh details like minimum dimension of component and maximum weight of single component 06 The tender do not specify any preferred make for electrical List of Electrical and mechanical items is and mechanical items enclosed in Annexure IV 07 In view of the criticality of the furnace we will quote in The date for submission of the bid is extended collaboration with our overseas partner In order to complete the proposal engineering and propose correct solution for your requirement we would request you to extend the bid submission date from February 2 2012 to February 22 2012 to 22 02 2012 PART G gt LAYOUT FOR COMMISSIONING OF HYDRAULIC PRESS AND SOLUTIONISING FURNACE Exit Door Rolling Bending amp Pressing Machines va Inspectior Ta ffffools felding PU Maur 15m H ight 3
6. stored for a fixed period of time 2 20 Cooling Rate Additional Clause 28 C hr 2 21 Delivery period Additional Clause 6 8 months from the date of Purchase order 2 22 Make of Electrical Mechanical Additional Clause List as per Annexure IV items 2 23 Plant Layout Additional Clause Annexure V 2 24 Heat treatment process for Additional Clause As per NAL NAP 17 aluminium alloys relevant details enclosed 2 25 Heat Treatment of ferrous Additional Clause As per NAL NAP 028 alloys relevant details enclosed Special Notes 1 2 The maximum net loading charge weight in both the options will be 75 Kg per batch The heat recovery time specified shall be 20 Minutes Material Specification process details and post solutionizing heat treatment parameters are as per NAP 017 for Aluminium alloys and applicable portion of NAP 028 within the limitations of this temperature range Relevant details of NAL NAP 17 and NAL NAP 028 are enclosed be decided accordingly by the vendor The smallest part size will be 20mmX20mmx 2 5 mm Thick aluminium part hung from the basket Basket mesh size to Available Space for the furnace is 5m L x8m W x5m H above floor level Civil work for construction of the pit for the drop down furnace will be carried out by NAL for loading unloading of charge located on a trolley in a pit The railing and supporting brackets fixtures are to be supplied by the
7. Display Unit Dynatek Minilec 15 P C with 4 GB Ram MMI of latest configuration HP Dell with 19 TFT Monitor 16 Printer Laser A3 Size HP 17 UPS APC 18 Conduits Pilica tubes Connect well 19 Control cubicle Rittal 20 Main controller Safety controller Paper less Eurotherm Honeywell Recorder Temperature Recorder 21 Thermocouples Toshniwal Tempsen 22 Insulation MMTCL Unifrax PART C HEAT TREATMENT PROCESS FOR ALUMINIUM ALOYS NAL NAP 17 TABLE I SOAKING TIME FOR SOLUTION HEAT TREATMENT OF ALL WROUGHT PRODUCTS IN AIR CIRCULATING FURNACE SHEETS TUBES AND PLATES Same as for sheets up to 6 0mm plus 15 minutes for each additional 6mm or part thereof PART THICKNESS mm Up to 0 60 0 61 0 80 0 81 6 00 MAX QUENCH DELAY seconds Greater than 6 00 mm TABLE III EXTENDED COLD STORAGE TIME Storage Maximum permissible I Temperature C 0 4 Hours 7 1 Day 12 2 Days i 15 4 Days 18 T 7 Days 7 ai 7 i 10 Days ainiai 2 30 Days NAL NAP 17 HEAT TREATMENT PROCESS FOR ALUMINIUM ALOYS TABLE IV HEAT TREATMENT PARAMETERS FOR WROUGHT ALUMINIUM AL LOYS T joasay Hed Sa 30 Wg jeuoppe leave S31V1d UTT6 g7 z o Au3A033J JO N aot 1009 4IV BESAN 0 yoea 104 S1U ST snd 37 OSE Wa 133HS 91 T909 009 338U N41H T 0313 ed say ZT 6 10 an el sagn 7 7 pele F 133HS ETT 258 91
8. FILE NO CAD Pur 2K11 089 PROCEEDINGS OF THE PRE BID CONFERENCE FOR THE PROCUREMENT OF SOLUTIONIZING FURNACE DATE amp TIME 11 01 2012 11 30am VENUE C CADD Conference Hall The Pre bid Conference was held and the following TPC members attended the meeting 1 Mr Yogesh Kumar Chairman 2 Mr Kamaleshaiah Invitee 3 Mr S Ravishankar Project Leader 4 Mr C Chandrashekar Member 5 Mr H G Jayarama Reddy Member 6 Mr M S Pradeep Indentor 7 Mr N Ramamurthy SO F amp A Member 8 Mr V R Patil SPO Member Convenor The list of Prospective Bidders who attended the meeting as per Annexure l At the outset the Chairman welcomed all the Members and the representatives of the Prospective Bidders and briefed in general the scope of the Project and thereafter requested SPO to brief the vendors on the salient features of the Commercial terms and the Indenting Officer to read out the clarification sought by the Prospective Bidders and the replied thereto as detailed in Annexure ll The representatives present were satisfied with the replies given and it was informed that the corrections additions clarifications give as discussed during the Pre Bid Conference would be hosted on the website of NAL and all the Prospective Bidders are required to take cognizance of the proceedings of the Pre Bid Conference before submitting their bids as stipulated in Clause 1 42 of the Bidding Documents The meeti
9. PID programmable Automatic through Micro Processor based PID controller and paper less recorder for temperature control type programmable Controller with thyristor and recording of the furnace temperature However we power pack with PLC MMI and SCADA propose to use PLC and HMI with SCADA system to system to program modify operating heat program modify operating heat cycles log all activities cycles cooling cycles log all activities during during operation like trends faults and cycle start and operation like trends faults and cycle start completion time All the data can be printed or can be stored and completion time All the data can be for a fixed period of time The system offered will not printed or can be stored for a fixed period of comprise of separate PID for temperature control However a time A digital ON OFF controller can be digital ON OFF controller will be provided for over provided for over temperature control temperature control 04 Chapter 4 Section II construction details Point 1 3 of the All safety precautions should be taken care to tender mentions about inner wall made of Stainless Steel comply with 10 1 1 10 1 j and 14 3 Further However point 4 0 describes Nichrome strips supported on the design should ensure that no short circuit ceramic supports all around the furnace occurs Please note that with metallic inner wall it is not desirable to use strip type heating elements on wall In which case short circuit
10. be printed or can be stored for a fixed period of time Temperature recording shall be through a multi point paperless recording system with computer connectivity and supporting software of Eurotherm Honeywell make These features shall be programmable by the user 10 5 13 0 Computer controlled parameter setting with associated software The software shall be user friendly permit the operator to pre set pre program heat treatment parameters like soaking time ramp time furnace temperature and have provision for entry of other comments operational details The software shall also store all the heat treatment parameters during the operation of furnace and have post processing capability to generate user defined plots Vendor to provide details Vendor shall supply dedicated PC with software to meet these requirements and a user manual for use of the software TRAINING Computer controlled parameter setting with associated software The software shall be user friendly permit the operator to pre set pre program heat treatment parameters like soaking time ramp time cooling rate furnace temperature and have provision for entry of other comments operational details The software shall also store all the heat treatment parameters during the operation of furnace and have post processing capability to generate user defined plots Vendor shall supply dedicated Personal Computer PC with SCADA software to meet these requiremen
11. erred from the bottom opening of the furnace into Quenchant tank situated below the furnace meeting the quench delay requirements as per SI No 2 19 This operational procedure shall be fully automated with necessary interlock 6 5 9 1 9 4 Overhead crane provision for loading unloading of basket from the tank to be provided Suitable locator on the basket to be provided for auto run of these operations The temperature control shall be through appropriate microprocessor based auto tuning PID temperature controller backed with Thyristor Temperature recording shall be through a multi point paper and paperless recording system with computer connectivity and supporting software of Eurotherm equivalent reputed make The resolution of the temperature plot shall be better than or equal to 6 C mm transverse direction and the chart speed minimum 25mm hour with a provision to print the date and time These features shall be programmable by the user This clause is deleted as it is addressed in Clause 6 3 8 10 Quenching Media Additional Clause The quenching media will be Demineralised water only The temperature control shall be Automatic through Micro Processor based PID type programmable Controller with thyristor power pack with PLC MMI and SCADA system to program modify operating heat cycles cooling cycles log all activities during operation like trends faults and cycle start and completion time All the data can
12. ng ended with a vote of thanks to the Chair Encl as above Mr M S Kamaleshaiah S Ravishankar Member Member gt Chonda Yes wE C Chandrashekar H G Jayarama Reddy _ gt Pradeep Member Member Indentor bois Mr N AS oe LD gt a ago SO F amp A SPO Chairman ANNEXURE FILE NO CAD Pur 2K11 089 ATTENDANCE SHEET DATE amp TIME 11 01 2012 11 30am VENUE C CADD Conference Hall The following representative of Prospective Bidders attended Pre bid Conference for the procurement of Solutionizing Furnace Sr No Name of the Firm So0c Zu dalai _ Name amp Designation of the representative Signature 1 ae P VAL SAN Cy AD p fuY uwa m RE Samkartemada fy I Rael Boy E CD EB kn a Bored ut Techn cof VS a Abon S PM Puma e Nos Nuo 5 Tender No CAD Pur 2K11 089 Pre Bid Proceedings Annexure ll Contents 4 Content Pages Amendment to technical specifications of Chapter 04 2 Makes of electrical and mechanical items Heat treatment process for aluminium alloys NAL NAP 17 Heat treatment process for Ferrous alloys NAL NAP 028 Reply to Queries raised by M s Welmach Engineers Bangalore Reply to Queries raised by M s Associated Industrial Furnace P Ltd Kolkata ol T mojo w gt 5 lt A INPIN Plant Layout for Hydraulic Press amp Soluti
13. onising Furnance NOTE The due date for submission of the tender is extended to 22 02 2012 upto 1630 hrs IST PART A Amendment to technical specifications of Chapter 04 With reference to the Pre Bid meeting held on 11 01 2012 at 10 30 am on the above subject the following technical specifications of Chapter 04 of the tender document are amended as listed below The amendment is applicable for both Option I and Option II SI No Description Specification Amended Specification 2 7 Working Temperature 0 600 C continuously variable 250 C 600 C continuously variable with with programmable control programmable control 2 12 Temperature Control System Automatic through Micro Processor Automatic through Micro Processor based PID based PID Controller with thyristor type programmable Controller with thyristor power pack power pack with PLC MMI and SCADA system to program modify operating heat cycles cooling cycles log all activities during operation like trends faults and cycle start and completion time All the data can be printed or can be stored for a fixed period of time 2 13 Temperature Recorder Multi Point Paperless recorder along PLC MMI and SCADA system to program with paper reading modify operating heat cycles cooling cycles log all activities during operation like trends faults and cycle start and completion time All the data can be printed or can be
14. rty weld inspection is required for casing Does it include the complete furnace like the doors inside baffle only and other fabricated components or only to the outer shell This will have an impact on the price and hence this clarification 07 To prove the acceptance of the equipment with load please Enclosed relevant sheets of NAL NAP 17 and provide the material alloy specification and the final heat treatment Spec you are looking for so that the process could be clearly understood by us NAL NAP 028 for reference PART F Reply to Queries raised by M s Associated Industrial Furnace P Ltd Kolkata SI No Query Reply 01 Chapter 4 of the tender mentions that the furnace design is As per layout drawing enclosed Potential dependent of the allocated site As desired by you we will vendors should visit the designated site visit your plant on the designated date However we request before submission of quotation you to provide a layout drawing enabling us to understand the site condition and design accordingly 02 Under furnace Specification Sr No 2 10 to 2 13 of the The relevant details of NAL NAP 17 and tender maximum weight of products to be solutionised and NAL NAP 028 are enclosed Max wt 75kg time temperature profile heat up time Soak time etc is not per charge excluding basket weight available to determine power rating of the furnace 03 Point No 2 12 and 2 13 mentions
15. ts and a user manual for use of the software The controller shall be capable of storing preprogammable preprogrammed cycles of minimum twenty programs 13 1 Minimum 10 days of training to be provided for NAL Engineers on operation and maintenance of the furnace after installation and commissioning of the furnace at Minimum 10 days of training to be provided for NAL Engineers on operation and maintenance of the furnace after installation and commissioning of the furnace at NAL including operational NAL training on usage of MMI and SCADA application software PART B MAKES OF ELECTRICAL AND MECHANICAL ITEMS SI No Description Make 01 Pneumatic Cylinders Festo SMC 02 Hydraulic power pack cylinders pump Rexroth Yuken Vickers 03 Valves Rexroth Yuken Polyhydron 04 Fibre Modules Murugappa Morgan MMTCL Unifrax 05 Heating element strip Ni Cr 80 20 Sandvik Kanthal Rescal 06 Motors ABB Seimens Bharath Bijlee 07 Geared motors Gear Box Radicon Bonfiglioli Shanti Crompton Greaves 08 MCB MPCB Power Contactors Siemens Schenider L amp T 09 Thyristor Pack Eurotherm AEG 10 Push Buttons Switches indication lamps Siemens Technic L amp T Schneider 11 PLC SCADA Supervisory Control And Data Seimens Allen Bradley GE Fanuc Acquisition 12 Cables Wires copper LAPP Finolex Polycab 13 DC Power source Seimens 14 Annunciation window
16. various thickness ranges The of size 1500mm X 1300mm x2 5 mm Thickness and 4 Nos tobe load per charge shall not exceed loaded per batch This will constitute approximately 50 kg load 75 kg NAL NAP 17 is enclosed for reference 03 In option II the same is mentioned as 2 M X1 2mX2 5mm The trials for approval testing involve evaluating thickness 4 nos sheets where the loading per batch will constitute components of various thickness ranges The approximately 75 kgs load per charge shall not exceed 75 kg NAL NAP 17 is enclosed for reference 04 For aerospace aircraft components solution treatment normally a Yes Please refer NAL NAP 17 which details the recovery time of 20 minutes is specified namely the furnace under process heat treatment Spec for Aluminium temperature when loaded with the specified load the furnace alloys and applicable portion of NAL NAP 028 temperature should pick up in 20 minutes is this applicable in case Within the limitation of this temperature range as the KW rating for heating will depend on this data Enclosed NAL NAP 17 and NAL NAP 028 specifications for reference 05 Agitation of the water by a propeller is required for uniform drop in Not required temperature of the parts and to get the required as quenched hardness This has not been specifically mentioned in the technical Specs Should we consider this 06 Under casing inspection by third party for welding is specified Third pa
17. vendor during pit construction The pit layout drawings are to be given by the vendor at the time of placing the purchase order 6 0 64 filled with ceramic fibre modules of 12609 C range all around the furnace including bottom and door Vendor to specify the thickness The temperature on the outer surface of the furnace wall exposed to ambient shop environment shall not exceed 70 degree Celsius when the furnace is working at its maximum operating temperature UNLOADING SYSTEM The S S charge basket with parts shall be transferred from the bottom opening of the furnace into Quenchant tank situated below the furnace meeting the quench delay requirements as per SI No 2 19 Sl Description Specification Amended Specification No 1 0 CASING 1 3 The inner wall shall be fabricated out of thick stainless Clause deleted Inner wall not required steel sheet Vendor to specify the thickness 3 0 FURNACE LINING 3 1 The space between outer casing amp inner casing shall be The insulation between the outer casing and the heating element shall be made of ceramic fibre module of a minimum thickness of 250 mm with fiber module of density 160 kg m The temperature on the outer surface of the furnace wall exposed to ambient shop environment shall not exceed 70 degree Celsius when the furnace is working at its maximum operating temperature LOADING UNLOADING SYSTEM The S S charge basket with parts shall be transf
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