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ship shaft

China

-

( Negotiable ) Get Latest Price

China

-

1 Piece

Wood or Iron frame with plastic outside

30-60 days after PO confirm

2000 Piece per Year

T/T, L/C

Forgings

今すぐお問い合わせください

製品仕様

Flexible or Rigid : Rigid Standard or Non standard : Standard Material : 35CrMo 42CrMo,S34MnV, etc. 40Mn 45Mn 50Mn 25CrMo 42CrMo and 25Cr2Ni4MoV Brand Name : TongYu Structure : -
Shaft Common Materials : 40Mn 45Mn 50Mn 25CrMo 42CrMo and 25Cr2Ni4MoV Crankshaft commom Materials : 35CrMo 42CrMo,S34MnV, etc. Certified by 9 classification societies : CCS ,ABS, BV, DNV, GL, LR, NK, KR, and RINA. Manufacturing process : Smelting-forging-Heat treatment-Roughing-Quenching & Tem

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 20Mn 40Mn 45Mn 50Mn 25CrMo 42CrMo and 25Cr2Ni4MoV.
 
Manufacturing process
Smelting-forging-Heat treatment-Roughing-Quenching & Tempering-Machining-Packaging.
 (parts of forgings well-done after tempering)
 
Quality control
  1. 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
  2. Strict forging techniques are required to meet the nondestructive testing needs ,
  3. 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.
  4. CNC equipment is employed for finishing line to ensure the forgings precision.
  5. 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 : 35CrMo 42CrMo,S34MnV, etc.
 
 
Manufacturing process
Smelting-Forging-heat treatment-Roughing-Quenching and Tempering-Machining-Packaging
(parts of crankshaft are well-done after tempering)
 
Quality control
  1. 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.
  2. Strict forging techniques are required to meet the nondestructive testing needs ,and to ensure the continuity fibers.
  3. After being heat treated ,the crankshaft will own great comprehansive mechanical properties and high fatigue strength.
  4. The finishing line is equipped with CNC equipment to guarantee the high accuracy.
 
Why choose TongYu rotors
 
  1. The ship rotors produced by TongYu are distinguished for high strength, fatigue strength and impact resistance.
  2. 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.
 

お問い合わせ

連絡先担当者: Levi

会社:Tongyu Heavy Industry Co., Ltd

住所:Jinan, Shandong, China,

To,

Levi < Tongyu Heavy Industry Co., Ltd >
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