1、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. 2009 by Navistar, Inc. APRIL 2009 Page 1 of 7 NAVISTAR, INC. TMS (TRUCK MATERIAL SPECIFICATION) NUMBER: T
2、MS-1050 TITLE: Flexible Steel Hose CURRENT REV No.: 0904 DATE: April 2009 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE DATED: August 2008 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification may involve hazardous mat
3、erials, 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 regulatory limits prior to use. Change Notice: Revised
4、Section 4.1 on material requirements. Reference: Keywords: Exhaust Pipe; Flexible 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 i
5、s not to be used when raw fuel is present in the exhaust gas traveling through 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, sou
6、rce approval and quality control, for both types of hose. TYPE I - ID Controlled 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 References on existing drawings to AM-76710 for materials, construction, dimensions, installation, etc., are superseded by this specifica
7、tion. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product 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 a
8、pply. The following specifications and standards are referenced in this specification. 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 Drawin
9、g AD-6955 CFR Title 29, Part 1910 NAVISTAR CEMS B-50 CFR Title 40, Part 205 NAVISTAR TMS-1068 NAVISTAR Engineering Dwg. AM-76710 NAVISTAR CEMS A-37 Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without lice
10、nse from IHS-,-,-NUMBER: TMS-1050 TITLE Flexible Steel Hose REVISION: 0904 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. APRIL 2
11、009 Page 2 of 7 4.0 REQUIREMENTS 4.1 Material 4.1.1 For 4-inch O.D. hose or larger: Type 302, Type 304, or Type 321 stainless steel per CEMS A-37, cold rolled stainless steel strip 0.017-0.020 inch thick, Finish No. 2D, 2B, or BA. 4.1.2 For hose greater than 2.5” O.D. and less than 4” O.D.: Type 409
12、 or 300 series Stainless Steel per CEMS A-37. Exception: Pulling force for a 15% min extension shall be a maximum of 45 pounds (see Construction Requirement, Section 4.2). 4.1.3 For 2.5” O.D. hose: 300 series stainless steel per CEMS A-37 (Optional: Type 439 stainless steel) 4.2 Construction Hose sh
13、all be constructed of an interlocked 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 pro
14、vided unpacked or packing with 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 min
15、imum allowable pulling force to 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
16、foot of hose at 4 psig. (Note: 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 1.50 38.0 +0.030/-0.000 +0.75/-0.000 2.00 50.0 +0.030/-0.000 +0.75/-0.000 2.25 57.0 +0
17、.030/-0.000 +0.75/-0.000 2.50 65.0 +0.030/-0.000 +0.75/-0.000 2.75 70.0 +0.030/-0.000 +0.75/-0.000 3.00 75.0 +0.030/-0.000 +0.75/-0.000 3.25 82.0 +0.030/-0.000 +0.75/-0.000 3.50 90.0 +0.030/-0.000 +0.75/-0.000 4.00 100.0 +0.030/-0.000 +0.75/-0.000 5.00 125.0 +0.030/-0.000 +0.75/-0.000 Bore ovality t
18、olerance will not exceed the total applicable ID tolerance Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-1050 TITLE Flexible Steel Hose REVISION: 0904 This document
19、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. APRIL 2009 Page 3 of 7 Outer Diameter - Type II only OD Tolerance inch mm Inch mm 2.50 65 +0.020
20、/-0.010 +0.50/-0.25 2.75 70 +0.020/-0.010 +0.50/-0.25 3.0 75 +0.020/-0.010 +0.50/-0.25 3.5 90 +0.020/-0.010 +0.50/-0.25 4.0 100 +0.020/-0.010 +0.50/-0.25 5.0 125 +0.020/-0.010 +0.50/-0.25 Outer diameter ovality tolerance will not exceed the total applicable OD tolerance. 4.5 Length - applies to both
21、 Type I and Type II Specific requirements for cut lengths of hose for each 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
22、 midway between the compressed length and full extension (see engineering tabulations 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
23、mm/m). 4.7 Installation Install hose in the 10 %, partially extended position, 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 se
24、rvice life of the flex pipe because opposite sides of the flex pipe will be 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 Di
25、ameter (inch) Min Inside Bend Radius (inch) 3.0 10.5 3.5 12.5 4.0 13.5 5.0 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
26、hose shall be marked on the outside diameter of the hose to indicate the preferred 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
27、in the marking procedure/process will be made without the prior approval of 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. Copyri
28、ght Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-1050 TITLE Flexible Steel Hose REVISION: 0904 This document is restricted and may not be sent outside Navistar, Inc. or repro
29、duced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. APRIL 2009 Page 4 of 7 4.10 Welding flex hose to pipe 4.10.1 Weld Quality 4.10.1.1 Appearance The weld should be smooth and continuous all the way around the pip
30、e. 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 cross over into adjacent corrugation for the same reason as above. 4.10.1.2 Leak Rate The total leak rate
31、 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. 4.10.1.3 Engagement/Overlap For welded assemblies, the overlap of the flex hose to the pipe should be 19 m
32、m. 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 shall be installed in the truck exhaust system in such manner that the flow direction label on the hose
33、is aligned with the direction of the exhaust gas flow. Figure 1 Gas Flow Direction Figure 2 INNE R P IP EOUT E R P IP ED I R EC T I O N O FF L O W ST AM PEX H AU ST F L O WD I R EC T I O NF L E X P IP EX - S E CT IO N F L O W F L O W F L O W F L O W EXHAUSTFLOWDIRECTIONE x a m p l e o f fl o w st a
34、m p i n g .Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-1050 TITLE Flexible Steel Hose REVISION: 0904 This document is restricted and may not be sent outside Navist
35、ar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2008 by Navistar, Inc. APRIL 2009 Page 5 of 7 5.0 QUALITY Hose shall be clean and free from chips, burrs, slivers, nicks, and gouges. Ends shall be cut (square or spir
36、al 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, Engineering may designate certain features as key characteristics for which management by statistical process control is mandatory. The following fea
37、tures are designated Key Control Characteristics for flexible steel hose supplied to the requirements of the specification. 1. Type I Hose: ID within 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 specifie
38、d on the tabulation drawing for that part number. 6.0 SOURCE APPROVAL AND QUALITY CONTROL 6.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality System Requirements. NAVISTAR will also accept TS-16949 registration as long as the supplier can also fulfil
39、l all AIAG PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish copies of registration certificates to their Corporate Buyer upon request. 6.2 Approval Parts supplied against contrac
40、ts or purchase orders citing this specification shall be equivalent in all respects to those samples which were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. In the event that changes in material, properties, processing practices, constr
41、uction, color, or labeling of the product are required, the supplier shall notify Truck Development and Technology Center and NAVISTAR Purchasing and Supplier Development of the proposed change(s). Test data indicating conformance to all requirements of this specification, test samples, and new or a
42、mended or updated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. 6.3 Process Control The supplier shall either perform and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guideline
43、s, or provide statistical evidence of the lot having been produced in a state of statistical control and with a process capable of providing all required properties. The part supplier and the plant metallurgist and/or the quality control manager of the using NAVISTAR plant may determine testing and
44、reporting requirements on specific products. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: TMS-1050 TITLE Flexible Steel Hose REVISION: 0904 This document is restricted
45、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. APRIL 2009 Page 6 of 7 7.0 SHIPPING, PACKING AND IDENTIFICATION Flex pipes shall be packed with their main axi
46、s horizontal to the ground. Pipes shall not be stacked vertically standing on end. Consideration in packaging must be given to preventing compression or extension of the pipes from their specified half-extended lengths during transportation. 8.0 DESIGNATION ON DRAWING The drawing shall indicate the
47、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 pipe 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 of TMS-1050.” 9.0 APPROVED SOURCES International Metal Hose Co. Universal Metal Hose Co. Federal Metal Hose Co. FlexWeld Corp. Flexonics Division Tru-Flex Metal Hose Corp. 10.0
