PDF GB/T 37609-2019 English
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General technical requirements of corrosion-resistant alloy strips and wires for welding
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GB/T 37609-2019: PDF in English (GBT 37609-2019) GB/T 37609-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.99;77.140.65
H 59
General technical requirements of corrosion-resistant
alloy strips and wires for welding
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: MAY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Classification and designation ... 5
5 Order content ... 5
6 Size, shape, weight ... 6
7 Technical requirements ... 8
8 Surface quality ... 8
9 Test methods ... 9
10 Inspection rules ... 11
11 Packaging, marks and quality certificate ... 12
General technical requirements of corrosion-resistant
alloy strips and wires for welding
1 Scope
This Standard specifies terms and definitions, classification and designation,
order content, size, shape, weight, technical requirements, surface quality, test
methods, inspection rules, packaging, marks and quality certificate for nickel
base, iron nickel base corrosion-resistant alloy strips and wires for welding.
This Standard is applicable to general requirements for nickel base, iron nickel
base corrosion-resistant alloy strip electrode for welding that are used for
submerged arc surfacing with band-electrode and electro-slag surfacing with
band-electrode (hereinafter referred to as strip electrode), nickel base, iron
nickel base corrosion-resistant alloy solid wire electrode that are used for
molten inert gas shielded arc welding, tungsten inert gas shielded arc welding,
plasma arc welding and submerged arc welding (hereinafter referred to as wire
electrode).
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 228.1, Metallic materials - Tensile testing - Part 1: Method of test at
room temperature
GB/T 2975-2018, Steel and steel products - Location and preparation of
samples and test pieces for mechanical testing
GB/T 8170, Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 15007, Designations of corrosion-resistant alloy
GB/T 20066, Steel and Iron-Sampling and Preparation of Samples for the
Determination of Chemical Composition
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 strip electrode
A shape of welded filler metal. It has rectangular cross section. Its width is much
larger than thickness. When welding, it is used as electrode conduction current
and filler metal. It is usually used for submerged arc welding and electro-slag
welding.
3.2 wire/wire electrode
A shape of welded filler metal. It has circular section. When welding, it is used
as pure filler metal but not electrode conduction current. It is used for tungsten
inert gas shielded welding, plasma arc welding and laser beam welding. It can
be used as electrode conduction current and filler metal for MIG gas arc welding
and submerged arc welding.
3.3 cast
Cut a sample from wire electrode of winding bobbin, of which its length is long
enough to form a circle. Place it on a smooth plane to bounce off freely. The
degree of bouncing off when it ejects to form a ring state unconstrainedly is
called cast. Cast is usually represented by diameter measured after it bounces
off and is relaxed.
3.4 helix rise
Cut a sample from wire electrode of winding bobbin, of which its length is long
enough to form a circle. Place it on a smooth plane. When it relaxes naturally
and appears ring state, the vertical distance from any point on wire electrode to
plane is called helix rise.
4 Classification and designation
Classification and designation of strip electrode and wire electrode shall comply
with provisions of GB/T 15007.
5 Order content
Contract for ordering based on this Standard shall contain following information:
a) reference to this Standard;
6.2.2.5 According to purchaser’s requirements and indicated in contract,
straight-strip wire electrode may be supplied.
6.3 Weight
Strip electrode and wire electrode are delivered in actual weight. Weight of
individual coil (disc, bundle) shall comply with provisions of product standard or
be indicated in contract.
7 Technical requirements
7.1 Designation and chemical composition
7.1.1 Designation and chemical composition of strip electrode and wire
electrode shall be specified in product standard. Stricter control requirements
for chemical composition range, trace elements and residual elements are
allowed in contract.
7.1.2 Supplier shall perform finished product analysis on chemical composition
of strip electrode and wire electrode. Results shall comply with provisions of
product standard or contract.
7.2 Smelting method
Unless otherwise specified in product standard or contract, smelting method
shall be selected by supplier.
7.3 Delivery state
7.3.1 Strip electrode is usually delivered in cold-rolled state.
7.3.2 Wire electrode is usually delivered in cold-pulled or quench annealing
state after cold-pulling.
7.3.3 Delivery states of strip electrode and wire electrode shall be indicated in
product standard and contract.
8 Surface quality
8.1 Strip electrode
8.1.1 Surface of strip electrode shall have uniform metallic luster, clean and
grease-free, without dirt that is harmful to welding operation. There shall be no
defects such as cracks, heavy skin, scale, folding, delamination and foreign
matter inclusions on surface of strip electrode. But small heavy skin, creases,
dents and scratches and partial imperfections that do not exceed thickness
to measure maximum and minimum diameters.
9.3.2.4 Helix rise
Cut a sample that is long enough to form a circle on wire electrode of winding
bobbin. Place on smooth plane. When it relaxes naturally and appears ring state,
use general measuring tools such as ruler, steel tape to measure maximum
value from any point on wire electrode to vertical distance between planes.
10 Inspection rules
10.1 Inspection and acceptance
Inspection and acceptance of strip electrode and wire electrode are performed
by supplier’s technical quality supervision department. Supplier shall ensure
delivered strip electrode or wire electrode complies with provisions of contract
and product standard. Purchaser has right to accept according to provisions of
contract and product standard.
10.2 Batching rules
Strip electrode or wire electrode shall be submitted in batches for inspection
and acceptance. Each batch shall consist of strip electrodes or wire electrodes
that are of same designation, of same melting furnace number (or sub-furnace
number), of same specification, of same delivery state.
10.3 Sampling parts and sampling quantity
Sampling quantity, sampling parts shall comply with provisions of Table 4.
10.4 Re-inspection and determination rules
10.4.1 When analysis results of finished product’s chemical composition fail, it
shall re-sample from original sampling part to re-inspect rejected element. If re-
inspection results still fail, this furnace of strip electrodes or wire electrodes shall
be rejected.
10.4.2 When tensile test results at room temperature fail, it shall take any
sample double quantity from same batch of strip electrodes or wire electrodes
(including rejected strip electrodes or wire electrodes) to re-inspect. If re-
inspection results still fail, this batch of strip electrodes or wire electrodes shall
be rejected.
10.4.3 When size, shape, surface quality fail, this coil (disc, bundle) shall be
rejected.
10.5 Rounding-off of test results
sealed. Package in boxes. One or several discs of wire electrodes are allowed
to form a bundle for packaging. If there are special requirements for packaging
size, shape of wire electrode, they can be agreed by supplier and purchaser
through negotiation and indicated in contract.
11.1.2.2 Marks
Marking of wire electrode shall be performed through hanging signs, sticking
labels. Stick labels or hang signs on outer ring top (starting end of welding) of
each disc or coil of wire electrode, indicating alloy designation, furnace number,
specification, weight. On sign (label) of outer packaging of each disc or coil
(bundle), it shall indicate manufacturer’s name (trademark), designation,
furnace number, specification, weight and date of production. Mark writing shall
be clear, firm and reliable. For finished disc of wire electrode of which nominal
diameter is not greater than 4mm, ends shall be bent into disc or marked. For
finished disc of wire electrode of which nominal diameter is greater than 4mm,
ends shall have clear marks.
11.2 Quality certificate
11.2.1 Each batch of delivered strip electrodes or wire electrodes shall be
attached with quality certificate that proves that this batch of products comply
with standard and contract requirements.
11.2.2 Quality certificate writing shall be clear. Certificate shall indicate following
information:
a) supplier’s name;
b) purchaser’s name;
c) reference to product standard;
d) designation;
e) furnace (batch) number;
f) specification;
g) delivery state;
h) weight;
i) number of pieces;
j) contract number;
k) results of each test of product;
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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