1、NAVISTAR, INC. TMS (TRUCK MATERIAL SPECIFICATION) NUMBER: TMS-1050 TITLE: Flexible Steel Hose CURRENT REV No.: 0806 DATE: June 2008 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: Rev K - June 2007 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT R
2、EVISION This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of reg
3、ulatory limits prior to use. Change Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive; revised Sections 1.0, 4.1.1, 4.3, 4.9, 8.0, A.1; added Section 4.10 for welding flex to pipe; editorial changes. Reference: 650-8 Keywords: Exhaust Pipe; F
4、lexible Pipe; Flexible Hose; Flex Pipe 1.0 APPLICATION This specification covers two types of flexible steel pipe/hose used for making connections between pipes used in the exhaust system. The pipe described in this document is not to be used when raw fuel is present in the exhaust gas traveling thr
5、ough the piping; bellows per TMS-1068 should be specified when this is the case. 2.0 SCOPE This specification covers requirements for the material, construction, dimensions, quality, leakage, installation, design guidance, source approval and quality control, for both types of hose. TYPE I - ID Cont
6、rolled TYPE II - OD Controlled THIS SPECIFICATION REPLACES ENGINEERING DRAWING AM-76710. References on existing drawings to AM-76710 for materials, construction, dimensions, installation, etc., are superseded by this specification. 2.1 Restricted Chemical Substances Effective January 1, 2007, all pr
7、oduct supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified the latest issue of all referenced standards shall apply. The following specifications and standards are referenced in this sp
8、ecification. Quality System Standard ISO 9001or TS-16949 NAVISTAR Engineering Dwg. AM-82853 NAVISTAR Engineering Design Std A-16 NAVISTAR Engineering Dwg. WCL-7400 NAVISTAR Manufacturing Std MS-D-13 NAVISTAR Engineering Drawing AD-6955 CFR Title 29, Part 1910 NAVISTAR CEMS B-50 CFR Title 40, Part 20
9、5 NAVISTAR TMS-1068 NAVISTAR Engineering Dwg. AM-76710 NAVISTAR CEMS A-37 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. JUNE 200
10、8 Page 1 of 7 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TITLE REVISION: TMS-1050 Flexible Steel Hose 0806 This document is restricted and may not be sent outside Nav
11、istar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. 4.0 REQUIREMENTS 4.1 Material Cold rolled stainless steel strip 0.017-0.020 inch thick, Finish No. 2D, 2B, or BA. Type 302, Type 304, or Type
12、 321 stainless steel per CEMS A-37 may be used at the option of the manufacturer. 4.1.1 Optional Material: Applicable only to sizes below 4 inch O.D. Type 409 or Type 430 Stainless Steel per CEMS A-37. Exception: Pulling force for a 15% min extension shall be a maximum of 45 pounds (see Construction
13、 Requirement, Section 4.2). Also, refer to Section A.1 for prohibited use of 430 stainless steel when welding is required. When flex pipe is used in CGI lines, material must be 439 stainless steel or better (example: 300 series stainless steel). 4.2 Construction Hose shall be constructed of an inter
14、locked series of metal convolutions tightly wound about an axis so as to require a maximum pulling force of 35 pounds* to achieve an extension of 15% from the compressed length. Extension shall be 2.5 inches per foot minimum from the compressed position. Hose may be provided unpacked or packing with
15、 copper or stainless steel wire is permissible; asbestos packing shall not be used. End coils shall be tack-welded (both ends) after cutting to length (refer to Section A.1.1). Both ends shall have all burrs removed. * Note: There is a direct correlation between the minimum allowable pulling force t
16、o achieve a 15% extension and the maximum allowable leakage rate. The max allowable leakage rate constrains the minimum pulling force. 4.3 Leakage Rate Maximum leakage rate of hose in the one-half extended position shall be two standard cubic feet of air per minute per foot of hose at 4 psig. (Note:
17、 This requirement is necessary in order to meet 80dB pass- by noise testing; reference CFR Title 40, Part 205.) 4.4 Dimensions Bore Diameter - Type I only ID Tolerance inch mm inch mm 2.00 50.0 +0.030/-0.000 +0.75/-0.000 2.25 57.0 +0.030/-0.000 +0.75/-0.0002.50 65.0 +0.030/-0.000 +0.75/-0.000 2.75 7
18、0.0 +0.030/-0.000 +0.75/-0.0003.00 75.0 +0.030/-0.000 +0.75/-0.000 3.25 82.0 +0.030/-0.000 +0.75/-0.0003.50 90.0 +0.030/-0.000 +0.75/-0.000 4.00 100.0 +0.030/-0.000 +0.75/-0.0005.00 125.0 +0.030/-0.000 +0.75/-0.000 Bore ovality tolerance will not exceed the total applicable ID tolerance JUNE 2008 Pa
19、ge 2 of 7 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TITLE REVISION: TMS-1050 Flexible Steel Hose 0806 This document is restricted and may not be sent outside Navista
20、r, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. Outer Diameter - Type II only OD Tolerance inch mm Inch mm 2.50 65 +0.020/-0.010 +0.50/-0.25 2.75 70 +0.020/-0.010 +0.50/-0.253.0 75 +0.020/-0.01
21、0 +0.50/-0.25 3.5 90 +0.020/-0.010 +0.50/-0.254.0 100 +0.020/-0.010 +0.50/-0.25 5.0 125 +0.020/-0.010 +0.50/-0.25Outer diameter ovality tolerance will not exceed the total applicable OD tolerance. 4.5 Length - applies to both Type I and Type II Specific requirements for cut lengths of hose for each
22、part number are shown on the Engineering Tabulation drawings. Tolerance for compressed (solid) length is +0.050/-0.000 inch (+1.25/-0.00 mm). Cut lengths of hose shall be furnished in an extended length which is approximately midway between the compressed length and full extension (see engineering t
23、abulations for specific requirements); tolerance for furnished length is +0.25/-0.00 inch (+6.5/-0.00 mm). 4.6 Straightness - applies to both Type I and Type II Cut lengths of hose shall be straight within 0.25 inch/foot (20 mm/m). 4.7 Installation Install hose in the 10 %, partially extended positi
24、on, normally one-half of the total extension. 4.8 Bending Radius The minimum inside bend radius for flex pipe connections is shown below: Note: Installation of the flex pipe in a bent condition may significantly reduce the service life of the flex pipe because opposite sides of the flex pipe will be
25、 either extended or compressed beyond the recommended half extended length. If the flex pipe is installed in a bent condition, any further extension or compression may cause yielding of the coils within the bend. Flex Pipe Diameter (inch) Min Inside Bend Radius (inch) 3.0 10.5 3.5 12.5 4.0 13.5 5.0
26、15.5 4.9 Flow Direction Labeling The hose construction as an interlocked series of metal convolutions wound about an axis provides a preferential direction of gas flow through the hose/pipe as indicated in Figure 1. The flex hose shall be marked on the outside diameter of the hose to indicate the pr
27、eferred direction of flow. The method of marking and frequency of the markings shall be agreed upon between Engineering, the Quality Department of the receiving NAVISTAR Plant(s), and the supplier. Upon agreement, no changes in the marking procedure/process will be made without the prior approval of
28、 Engineering and the Plant Quality Department(s). An example of an approved marking is shown in Figure 2. NAVISTAR engineering assembly drawings should specify the flow direction when flex pipe is used in the assembly. JUNE 2008 Page 3 of 7 Copyright Navistar International Corporation Provided by IH
29、S under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TITLE REVISION: TMS-1050 Flexible Steel Hose 0806 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Sta
30、ndards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. FLOWFLOWFLOWFLOWEXHAUST FLOWDIRECTIONExample of flow stamping.INNER PIPEOUTER PIPEDIRECTION OFFLOW STAMPEXHAUST FLOWDIRECTIONFLEX PIPEX-SECTIONFigure 1 Gas Flow Direction Figure 2 4.10 Welding flex hose to pipe 4.1
31、0.1 Weld Quality 4.10.1.1 Appearance The weld should be smooth and continuous all the way around the pipe. There cannot be start and stop points that create stress risers in the flex hose which could lead to premature failure. Also, the weld must follow the edge of the cut flex hose and should not c
32、ross over into adjacent corrugation for the same reason as above. 4.10.1.2 Leak Rate The total leak rate for the welded assembly should not exceed the leak rate of just the flex hose as specified in Section 4.3. In other words, the weld should be airtight at the pressure specified in Section 4.3. 4.
33、10.1.3 Engagement/Overlap For welded assemblies, the overlap of the flex hose to the pipe should be 19 mm. 4.10.1.4 Filler Metal Table XV in CEMS A-37 Appendix provides recommended filler metal for welding various combinations of stainless steel and low carbon steel. 4.11 Installation The flex hose
34、shall be installed in the truck exhaust system in such manner that the flow direction label on the hose is aligned with the direction of the exhaust gas flow. JUNE 2008 Page 4 of 7 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or
35、networking permitted without license from IHS-,-,-NUMBER: TITLE REVISION: TMS-1050 Flexible Steel Hose 0806 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liabilit
36、y. 2008 by Navistar, Inc. 5.0 QUALITY Hose shall be clean and free from chips, burrs, slivers, nicks, and gouges. Ends shall be cut (square or spiral cut) and deburred on the inside and outside of the hose. 5.1 KCC - Key Control Characteristics In accordance with Engineering Design Standard A-16, En
37、gineering may designate certain features as key characteristics for which management by statistical process control is mandatory. The following features are designated Key Control Characteristics for flexible steel hose supplied to the requirements of the specification. KCC1. Type I Hose: ID within
38、1.6 0.060 inches of each end. 2. Type II Hose: OD within 1.6 0.060 inches of each end. 3. Both Types: Furnished (one-half extended) length as specified on the tabulation drawing for that part number. 6.0 SOURCE APPROVAL AND QUALITY CONTROL6.1 Supplier RequirementsAll suppliers to NAVISTAR are requir
39、ed to be registered to ISO 9001 Quality System Requirements. International will also accept TS-16949 registration as long as the supplier can also fulfill all AIAG PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain their certification with an acc
40、redited registrar and must furnish copies of registration certificates to their Corporate Buyer upon request. 6.2 ApprovalParts supplied against contracts or purchase orders citing this specification shall be equivalent in all respects to those samples which were approved by the purchaser. No change
41、s in formulation or processing practices are permitted without approval. In the event that changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier shall notify Truck Development and Technology Center and NAVISTAR Purchasing an
42、d Supplier Development of the proposed change(s). Test data indicating conformance to all requirements of this specification, test samples, and new or amended or updated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. 6
43、.3 Process ControlThe supplier shall either perform and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guidelines, or provide statistical evidence of the lot having been produced in a state of statistical control and with a process capable of providing all requ
44、ired properties. The part supplier and the plant metallurgist and/or the quality control manager of the using NAVISTAR plant may determine testing and reporting requirements on specific products. 7.0 SHIPPING, PACKING AND IDENTIFICATION Flex pipes shall be packed with their main axis horizontal to t
45、he ground. Pipes shall not be stacked vertically standing on end. Consideration in packaging must be given to preventing compression or tension of the pipes from their specified half-extended lengths during transportation. exJUNE 2008 Page 5 of 7 Copyright Navistar International Corporation Provided
46、 by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TITLE REVISION: TMS-1050 Flexible Steel Hose 0806 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technic
47、al Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. 8.0 DESIGNATION ON DRAWING The drawing shall indicate the type of hose to be used depending upon the method of clamping selected. Example: TMS-1050, Type I Drawings should specify flow direction when flex pip
48、e is used in the assembly. All drawings specifying TMS-1050 flex pipe should include a note in the body of the drawing: “Flex pipe and welded assemblies will meet the quality and performance requirements per TMS-1050.” 9.0 APPROVED SOURCES International Metal Hose Co. Universal Metal Hose Co. Federal Metal
