ASM-SMT-Technical Conditions of Order and Deliveries (TCOD) - 第20页
20 www.asm-smt.com 9.1.8. Surfaces Applicable standards ISO/CIE 11664-6:2014 Colorimetric determination of color differences with surface colors based on the CIELAB formula I S O 2 8 1 3 P a i n t s a n d v a r n i s h e…
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As dimension “a” for the removal according to DIN ISO 13715, a deburred dimension of –0.1 to –0.5mm is defined unless
otherwise specified in the drawings.
The through-holes of the counter bored holes are produced according to ISO 273:1979, design “medium (m)”.
9.1.4. Threads
Applicable standards
DIN 13-1 ISO general purpose metric screw threads - Part 1: Nominal sizes for coarse pitch threads;
nominal diameter from 1 mm to 68 mm
ISO 3508 Thread run-outs for fasteners with thread in accordance with ISO 261 and ISO 262
DIN 78 Protrusion of bolt ends
DIN 7952 Sheet metal anchorage with threads; dimensions
ISO 261 ISO general purpose metric screw threads – General plan
ISO 262 ISO general purpose metric screw threads – Selected sizes for screws, bolts and nuts
ISO 965 ISO general purpose metric screw threads – tolerances
Dimensions for thread depths without specific tolerances should be considered as minimum dimensions.
Thread run-outs / undercuts shall be designed as for the standard described in ISO 3508.
Deviating from ISO 3508, a 90° counter bore is permitted for internal threads, where the diameter of the counter bore shall
be 1–1.05 x of the internal diameter of the thread.
Thread ends shall be produced according to DIN 78. For external threads, a 45°chamfer shall be added, with an
incomplete thread in the run-out area up to 2x P (P = thread lead) being permitted.
9.1.5. Quality of edges
Applicable standards
ISO 13715 Technical product documentation—Edges of undefined shape—Indication and dimensioning
The edges must be produced free of burrs according to DIN ISO 13715.
For machined parts (except plates and thin-walled parts), the dimension “a” (see DIN ISO 13715) shall be –0.1 to –
0.5mm.
For plate or thin-walled parts, it must be ensured that the width of the remaining surface between two deburred edges
does not become smaller than the dimension of the removed material. In cases where deburring causes new hazards of
injury, the edges shall be rounded in a suitable manner or the edge quality shall be coordinated with ASM AS.
9.1.6. Quality of bends
Applicable standards
DIN 9003 Aerospace; bending of sheets, plates and strips of steel and heat-resisting alloys, bending
radii, directions for design
The bending zones must be free from cracks and must not be coarse-grained.
9.1.7. Adhesive specifications
Applicable standards
When adhesive joints are required, the order documentation or drawings must include the corresponding information.
If such information is missing, this shall be clarified with ASM AS.
All adhesive joints shall be produced according to the relevant specifications of the adhesive manufacturers.
The retaining forces indicated in the documents are to be examined and documented by suitable measures, in order to
prove process security.
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9.1.8. Surfaces
Applicable standards
ISO/CIE 11664-6:2014 Colorimetric determination of color differences with surface colors based on the
CIELAB formula
ISO 2813 Paints and varnishes -- Determination of gloss value at 20 degrees, 60 degrees and 85 degrees
DIN EN ISO 2819 Metallic coatings on metallic substrates - Electrodeposited and chemically deposited
coatings –
Review of methods available for testing adhesion
The attributes specified in the drawings refer to the finished parts including their surface finish. Damage and scratches are
always unacceptable. This applies especially to visible and plastic parts.
Electro-plated and chemically plated surfaces
Unacceptable are:
• - Blisters in the coating
• - Flaking of the coating
• - Incomplete copper or nickel plating (in case of chemically nickel-plated surfaces)
• - Burned edges and surfaces
• - Rough, matte or buddy coatings
• - Patchy surfaces, dripping zones
• - Mechanically damaged coatings
Paint-coated / powder-coated surfaces
It must be ensured that the paints / powders are processed in compliance with the specifications of the paint or powder
manufacturers. The parts to be paint-coated must be free from corrosion, scale, gummed oil and other contaminations.
The coated surfaces must be evenly covered and free from contamination. Coated surfaces for lining parts (hoods, doors)
must be free from wax and separating compounds in order to ensure an optimum bonding of insulation materials. In the
case of changes of colors or structures, a sample must be released by ASM AS. If required, the surfaces to be coated
shall be provided with a primer meeting the requirements before coating.
Details regarding paint- and powder manufactures are specified in the product documentation or if necessary to
ask for by the purchaser.
To avoid color differences, the paints and powders should be purchased from these manufacturers.
Uncoated surfaces
As a rule, machined surfaces, fits and threads must remain uncoated. Exceptions are specifically marked in the drawings
as “coated”, “powder-coated” or similar.
Paint residues or residues of masking and wear materials on the parts are not permissible.
Uncoated or untreated surfaces of steel parts must be adequately protected against corrosion.
Recommended anticorrosion: SPC Surface Shield ML C 23411 or WD 40 (internet link: www.wd40.com)
Other surfaces
According to generally applicable technical specifications.
9.1.9. Welding / flame-cutting
Applicable standards
ISO 630-1:2011 Hot-rolled products of non-alloy structural steels; technical delivery conditions (10025-
1/2/3/4/5/6/7
ISO 10474 Steel and Steel Products – Inspection documents
DIN EN ISO 3834 -1 Quality requirements for fusion welding of metallic materials - Part 1 : Criteria for the
selection of the appropriate level of quality requirements
DIN EN ISO 3834 -2 Quality requirements for fusion welding of metallic materials - Part 2: Comprehensive
quality requirements
DIN EN ISO 3834 -3 Quality requirements for fusion welding for metallic materials - Part 3: Standard quality
requirements
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DIN EN ISO 3834 -4 Quality requirements for fusion welding of metallic materials - Part 4: Elementary
quality requirements
DIN EN ISO 2553 Welding and allied processes - Symbolic representation on drawings - Welded joints
DIN EN ISO 9013 Welding and related processes – Classification of qualities and dimensional
tolerances for flame-cutting surfaces
DIN EN ISO 9013-5 Thermal cutting – Classification of thermal cuts
DIN EN ISO 13920 General tolerances for welded constructions – Dimensions for lengths and angles –
Shape and position
DIN EN ISO 10042 Welding - Arc-welded joints in aluminum and its alloys - Quality levels for
imperfections
DIN EN ISO 9606-1 Qualification testing of welders - Fusion welding - Part 1: Steels
DIN EN ISO 14731 Welding coordination - Tasks and responsibilities
Welders must have a certificate in accordance with DIN EN ISO 9606-1 The supplier must have or must have
commissioned a welding coordinator in accordance with DIN EN ISO 14731. The supplier must meet the welding
requirements as laid down in DIN EN ISO 3834.
Table 1: Observance of additional requirements
Aspect
Standard
Requirement
Additional
Requirement
Comment
Material
ISO 630-1:2011
Structural steels
S 235 JR G2
Material No. 1.0038
ISO 10474Works test
certificate 2.2
(minimum)
Operational
requirements
DIN EN ISO
3834-3
Part 2 (Comprehensive)
Part 3 (Standard)
Furnish evidence for
welder certificates and
welding supervisors
Indication in
drawings
ISO 2553:2013
(ISO 2 553)
Welding quality
ISO 5817:2014
(ISO 5 817)
Classification group “C”
Undercuts “B”
Excessive throat
thickness “B”
Not permissible:
- Spattering
- Stuck wire ends
- Open irregularities (e.g. pores)
- Open face edges on plate parts
Flame-cutting quality
(autogenous)
DIN EN ISO
9013
Cutting quality II A (or
B)
Validity of tolerances unless otherwise
specified
Flame-cutting quality
(laser)
DIN EN ISO
9013
Validity of tolerances unless otherwise
specified
9.1.10. Castings
Applicable regulations, guidelines and standards:
ISO 4990 Steel castings -- General technical delivery requirements
ISO 16220 Magnesium and magnesium alloys -- Magnesium alloy ingots and castings
ISO 15201 Zinc and zinc alloys -- Castings – Specifications
ISO 8062-2 Castings -- System of dimensional tolerances and machining allowances
ISO 17804:2005 Founding -- Ausferritic spheroidal graphite cast irons -- Classification
ISO 20457 Plastics molded parts -- Tolerances and acceptance conditions
Observance of the above specifications, guidelines and standards is mandatory. All runners must be removed. All cavities
must be free from molding residues.
All castings shall be checked for cavitation and cracking in critical places. Any measures required to ensure the quality of
the series parts shall be defined.
Cavities traceability to be established by vendor.
Any changes to / deviations from these general specifications must be defined and must be released by ASM AS.