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VLC620AW Cable Pulley for Oil Drilling

Material:VLC620AW
Application: oil well,petroleum machinery
Weight: 2870kg
Status:finished machining with groove hardening 400-450HB
Class certificate:DNV
Payment terms:T/T or L/C
Availability:
Quantity:

Material

1649479506(1)


The sheaves are made according to VLC620AW,

mechanical property and NDT is witnessed by DNV.


When we firstly make it,we found there is a deviation after quench.

We do rough machining and welding after NDT.


After we found the deviation,

we change the steps.

We will not do the rough macihning but just do quenching directly,

and no there is still devation to be found but the margin is enough to adjust it.


To tell the truth,the sheaves are for a Norway company,

the price is good,

but the process is complicated.

We learn a lot from the process.


Prodution process

No.
Equipment Name
Quantity(Set)
1 Transformer substation 1
2 Full set of wooden molding equipment 10
3 Sodium silicate sand mix line 4
4 Alkaline phenol resin sand mix line 2
5 25 tons Electric arc furnace 1
6 50 tons Intermediate frequency furnace 2
7 120 tons Refining furnace 1
8 120 tons VD furnace 2
9 12m*9m*6m Heat treatment furnace 3
10 120 tons Large-scale shot blasting machine 1
11 150 tons Travelling crane 2
12 125 tons Travelling crane 3
13 200 tons Travelling crane 2
14 CNC gantry boring and milling machine 2
15 2.5m-10m Digital vertical lathe 16
16 Boring and milling machine 13
17 Horizontal lathe 3
18 Large dust removal equipment 7

1)The engineer will firstly prepare the technology and do a simulation before pouring.

1642741044(1)


2)We will make a pattern of the kiln tyre based on engineer's technology.

It will cost us around one week.

After that the engineer will check the dimension and make a record.

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3)Sand molding making will be made by experienced wokrers.

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4)Pouring and cooling.

There are one 8tons electrical arc furnace;

Two 50 tons medium frequency furnace;

One 120 tons refining furnace and one 120 tons VD furnace;

5)Clean the sand and cut the riser before heat treatment

6)Heat treatment will cost 7days( 4 days normalizing and 3 days tempring).

There are 8 heat treatment furances with max. one is 12m*9m*6m.

热处理炉

7)dimension check and draw a line for machining.

IMG_2136

8)Rough machining

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9)NDT withe qualified inspector

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10)Welding repair if needed and tempering for stress relief


11)Final machining and NDT


12)Customers' inspection and packing

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About Haitai

P5

Haian Haitai Casting Co.,Ltd. is established in 2003. 

We supply large steel castings with low carbon or alloy steel from 3 tons to 150 tons per piece.

With a quick development,now we had supplied steel castings 6,000 tons per month.

There are three workshop for sand mold making,one workshop for machining and one for post procedure.

We have rich experience to supply castings for BOP of Russian market.


The sheaves are not easy to make.

The wall thickness is small and when we do quenching,

we found deviation is easy to be found,

the big size is not easy to be adjusted.


Testing Equipment

No.
Equipment Name Quantity(Set)
1 Sand analysis equipment 1
2 Impact sample low temperature meter 1
3 Direct reading spectrometer(OXFORD) 2
4 ONH analyzer 1
5 ZEISS metallurgical microscope 1
6 Pendulum impact tester 1
7 Microcomputer controlled electro-hydraulic servo universal test machine 5
8 Various hardness tester 4
9 Magnetic defect detector 5
10 Ultrasonic flaw detector(digital) 1
11 CX-52 Total station 1
12 Stylus roughness meter 1


We do the test according to diffrent production step,

such as chemical composition,UT,MT and mechanical property.

In 2021,Haitai inspection and testing center got approval from CNAS.


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Delivery

Our company is near to Shanghai port and we can supply different packing according to customers' specification.

15

3233


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