99.99% High Purity Graphite Crucible for Precious Metal Gold/ Silver/ Platinum Melting

• Certification: ISO
• Shape: Cylindrical
• Color: Black
• Refractoriness: 1770< Refractoriness< 2000
• Type: Graphite Crucible
• Material: High Purity Graphite
• Advantages: High Temperature Resistance/ Acid Resistance/ Alka
• Application: Metal Melting/Refining Furnace
• Stock: Should Be Stocked in The Dry Situation
• Transport Package: Standard Export Package
• Specification: As your request
• Trademark: TTWY
• Origin: Qingdao, China
• HS Code: 69031000
• Production Capacity: 10000pieces/Month

Product Description

Product Description

Material: High Purity Graphite

Purity: 99.99%

Molding Process: Compression Molding

Application: Non-ferrous Metal and other alloy melting

TECHNICAL SPECIFICATIONS OF HIGH PURITY GRAPHITE:

Porosity (%)	15
Compressive strength (Mpa)	99
Flexural strength (Mpa)	50
Ash (PPM)	200
Resistivity (μΩ·m)	15.7
Bulk Density (g/cm^3)	1.78
Hardness( HSD)	60

Product Parameters

Size (OD×OH)	Outside Diameter(mm)	Inner Diameter(mm)	Outside Height(mm)	Inner Height(mm)	Capacity(ml)
20×20 mm	20	14	20	17	2.6
20×25 mm	25	14	25	17	2.6
30×30 mm	30	22	30	25	9.5
30×40 mm	30	22	40	35	12.5
30×60 mm	30	22	60	55	20
35×35 mm	35	25	35	30	14
35×45 mm	35	30	45	40
35×120 mm	35	25	120	115	50
40×40 mm	40	30	40	35	25
40×60 mm	40	30	60	55	38
45×80 mm	45	35	80	75	70
47×115 mm	47	41	115	112	145
50×50 mm	50	40	50	45	50
50×55 mm	50	40	55	50	55
50×80 mm	50	40	80	70	85
50×100 mm	50	40	100	90	110
60×60 mm	60	48	60	55	100
65×80 mm	65	50	80	70	135
65×100 mm	65	50	100	90	170
70×70 mm	70	58	70	60	155
75×80 mm	75	60	80	70	195
75×100 mm	75	65	100	90	300
80×30 mm	80	65	25	30	80
80×80 mm	80	65	80	70	210
80×90 mm	80	65	90	80	250
90×110 mm	90	70	110	100	380
100×100 mm	100	80	100	90	450
100×130 mm	100	80	130	120	600
135×120 mm	135	110	120	110	1000

 

 

Using method

Use an appropriate base (same material and equivalent size). Allow the crucible to expand and contract. The furnace cover should not be pressed on the crucible. In the resistance furnace, the fiber blanket should not be tightly compressed onto the crucible. The lining must be repaired and made as concentric as possible, which will prevent the flame in the flame heating furnace from deflection and impact on the crucible to ensure correct melting.

Preheating and maintenance (furnace temperature)

> Preheat for 3 hours at a constant temperature at 200 degrees;

> Preheat at a constant temperature of 700 degrees for 2 hours;

> Preheat at a constant temperature of 900 degrees for 1 hour;

> Shut down the furnace to cool the crucible to no redness;

> Then the temperature is raised to the normal aluminum melting/feeding temperature and the feeding is added in a vertical direction of 90 degrees.

Notes of operating crucibles

> The crucible should be stocked in the dry situation;
> Carry the crucible lightly;

> Warm the crucible in the drying machine or near the furnace. The warming temperature should be up to 500ºC;

> The crucible should be put under the furnace month flat;

> When put the metal into the crucible, you should take the crucible capacity as your reference. If the crucible is too full, it will be damaged by expansion;

> The clamps shape need as that of crucible. Avoid the concentrate stressed destroy of the crucible;

> Clean the crucible regularly and lightly;

> The crucible should be put in the center of the furnace and leave some distance between the crucible and furnace;

> Turn the crucible once in one week and this way can keep  the service life;

> The flame should not touch the crucible directly;

> 24 hours constant use will make crucibles have longer service life;

The smelt soup in the crucible should be cleared out when the furnace stop working, in order to avoid molten soup solidificating and will be expanded when fire to reheat, and affect the service life of crucible or even burst.

> We suggest that about 2 months for crucible melting aluminum alloy (every week for melting copper alloy), hanging out to check whether there is something wrong in the surface, and clean furnace hearth as well as turn the crucible, this operation ishelpful to prolong the service life of crucible.

Storage methods

1. The crucible must be stored in a dry environment, preferably on a wooden pallet, and kept well ventilated;

2. The crucible can be stacked when placed upside down;

3. The crucible must not be exposed to a humid environment, otherwise the glaze layer of the crucible after absorbing moisture will easily peel off during the crucible preheating, which will cause the graphite to be oxidized, and the thermal conductivity of the crucible will gradually decrease, which will reduce the service life of the whole crucible.

Used in these industries

 

Packaging & Shipping

In order to protect the glaze layer of the crucible, handling crucible must be very careful, to avoid knocking, collision or falling, we can't put the crucible on the ground and rolling to transport. Once the glaze layer of crucible is damaged, it will lead to oxidation and aging of crucible easily in the process of use. The crucible should be handled carefully in a padded cart (or other suitable conveyer).

Our company use rope, rubber, moisture-proof plastic paper, shockproof to pack the crucible, and according to customers' needs,  we can customize wooden cases, export packaging cartons, paper tubes, etc., to ensure that the crucible wouldn't be damaged in  transit.
 

Company Profile

    Qingdao TTWY Manufacturing Co.,Ltd is a company specialized in producing casting equipment. It is located in Qingdao,a beautiful harbor city,which is convenient in transportation. Especially in graphite products, for expamle, the graphite electrode, graphite crucible, clay graphite crucible,
Isostatic graphite crucible, etc;

    With high quality,reasonable price and attentive service the products produced by TTWY have wined trust from clients at home and aboard.

FAQ

Q1: What information should I let you know if i want to get a quotation?

A: The required material dimension (Thickness*Width*Length,diameter*length; if possible, please kindly supply us drawings).

The required more information, such as Surface Condition, Tolerance Request, The Quantity, and other mechanical and technical details.
     
If it is possible, please also provide the application of products, we will recommend the most suitable products with details for confirmation.
 
Q2: How do you gurantee the quality of the products?

A: Each step of production and finished products will be carried out inspection by QC department before storing in the warehouse. NG goods are not allowed in the completed goods warehouse.
 
Q3: Can you guarantee the prompt delivery?

A: Yes, when we get your inquiries, not only we will evaluate the more competitive price, but also we can get the most reasonable delivery time. So the prompt delivery can be guaranteed.

Q4: What is your lead time? 

A : It usually needs about 15- 20 days after receiving the PO. 

Q5 : What is your payments terms?

A : T/T, L/C, Western Union, etc., could be acceptable.

Q6 : Can we visit your company?

A : Yes, for sure, It's my pleasure to visit our company.

Q7 : What is the shipping cost?

A: The shipping cost is determined by the destination port, weight, packing size, total CBM of the products, we will try best to get the most reasonable shipping cost from the forwarders or express couriers to help you save more money.

Q8 :What is the transportation way?

A:If the Gross Weight ≤45kg, it's better by express such as TNT, DHL, FedEx,, etc. 
If the Gross Weight between 45kg to 100kg, by express or by air to your nearest airport can be both considered.
If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the nearest port.

Q9 :How service you can offer your clients? 

A:We provide presales service in various forms, for example, making investment budget,manufacturing planning,etc.so that customer make a reasonable plan with less cost. Moreover,we will also provide after sale service ,for example,free training about machine applications ect.