タイトルまたは説明
Forged Structural Parts for
ship
The large forgings for shipbuilding TongYu provides can be divided
into 2types: strcutual parts of ship (rubber stock, rubber pin,)
and shaft forgings( intermediate shaft, propeller shaft). The first
type mainly calls for high welding, but little carbon equivalent
requirement for steels.
Forging for ships feature large size
and heavy weight. Its performance requirements, especially property
diffirence between both ends of the boats is extremely harsh, Boats
opretaing in ice-filled require additional resistance to
low-temperature impact.
In the whole production lines of
smelting ,forging, heat treatment, flaw detection, and mechanical
processing ,TongYu has set strict quality control systerm, The
forging for shipbuilding made by TongYu comply with the
classification societies of each country. We have now been
certified by CCS ,ABS, BV, DNV, GL, LR, NK, KR, and
RINA.
TongYu is now one of major
manufacturer of large casting and forgings in China .We provide all
kinds of free forgings used for thermal power,hydroelectirc, and
shipbuilding industires
Clients are required to offer their
drawings and technical requirement, Which will transferred to
technical department(heat treatment center, large forgings research
center, mechanical research center, and welding department, etc,)
for confirmaion and accounting, Then we will offer you the
quotation, The ordered products will be put into production as soon
as possible after clients have placed an order. For any
problems rasied in the product line ,We will contact and disscuss
with our clients directly.
Common Materials
Carbon steel Carbon manganess
steel and alloy steel prescribed by classification societies, like
*0Mn *0Mn *5Mn *0Mn *5CrMo *2CrMo and *5Cr2Ni4MoV.
Manufacturing process
Smelting-forging-Heat treatment-Roughing-Quenching &
Tempering-Machining-Packaging.
(parts of forgings well-done
after tempering)
Quality control
-
In the smelting process, to
ensure the high purity and low gas content of raw material
,apart from the prescribed chemical elements, we have to
strictly inspected some harmful elements such as P S Pb Sn As
Sb and Bi,as well as some gas or non-metallic debris like H N
and O
-
Strict forging techniques are
required to meet the nondestructive testing needs ,
-
Heat treatment is needed to
enhance the forgings comprehensive mechanical properties;
forgings for boats operating in ice-filled water are resistance
to low-temperature impact.
-
CNC equipment is employed for
finishing line to ensure the forgings precision.
-
For forgings parts with welding
needs, we will adjust their chemical components to realize a
reasonable carbon equivalent and enhance their
performance.
​
Case Study (ship
parts)-Crankshaft
Crankshaft is one of most
important parts in engine, It bears the force from connecting
level, and transfer it to torque to drive other accessories of the
engine, Under the composition of the centrifugal force , the
periodically changing inertial force ,and the reciprocating
inertial force ,the crankshaft undertakes bending and torsional
loads, The working environment of crankshaft requires it to possess
a variety of excellent properties, like strength ,rigidness, wear
resistance,fatigue resistance, and impact resistance ,as well as
high dimensional precision .Additionally ,the surface ,inner
structure, and fiber distribution of the crankshaft is vital to its
performance.
Large crankshaft used for locomotive
and internal combustion engine of ships have to work under harsh
environment under heavy load continuously for long time .So the
manufacutring requirement for
this kind of crankshafts are much higher .
Crankshaft for boats are large and
heavy and complex structrue. Its manufacturing process involves
many steps , including smelting ,ingot fabricating,forging, heat
treatment ,and machining,. So apart from modifying the properties
of crankshafts material, it is also vital to determine the
manufacturing techniques to get the crankshafts with the specific
performance we want .
Common material : *5CrMo *2CrMo,S*4MnV, etc.
Manufacturing process
Smelting-Forging-heat
treatment-Roughing-Quenching and
Tempering-Machining-Packaging
(parts of crankshaft are well-done
after tempering)
Quality control
-
In the smelting process, strict
cintrol is needed for some harmful elements,gas ,and
non-metallic impurities, like P S Pb Sn As Sb Bi H O and N,
apart from the prescribed chemical components.
-
Strict forging techniques are
required to meet the nondestructive testing needs ,and to
ensure the continuity fibers.
- After being heat treated ,the crankshaft will own great
comprehansive mechanical properties and high fatigue strength.
- The finishing line is equipped with CNC equipment to
guarantee the high accuracy.
Why choose TongYu rotors
- The ship rotors produced by TongYu are distinguished for high
strength, fatigue strength and impact resistance.
- High purity and uniform chemical components.
TongYu crankshafts are classified into integral
and combined type. Our crank arm has been certified by MAN and
classification societies .It can be produced in
batches.
| 国: |
China |
| モデル番号: |
-
|
| 离岸价格: |
( Negotiable ) （交渉可能）
Get Latest Price
|
| ロケーション: |
China |
| 最低注文量の価格: |
- |
| 最低注文量: |
1 Piece |
| パッケージの詳細: |
Wood or Iron frame with plastic outside |
| 納期: |
30-60 days after PO confirm |
| 供給能力: |
2000 Piece per Year |
| 支払いタイプ: |
T/T, L/C |
| 製品グループ : |
Forgings
|
