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Point Bottom Alumina Crucible

Point Bottom Crucible. Available in recrystallised Alumina (99.5%).Good corrosion resistance,high temperature resistance,good thermal shock, no easy to crack,high slip casting density.

item no. :
CS-SS-001
hits :
532
Color :
white
Material : Alumina ceramic

contact now catalogue

description

Point Bottom Alumina Crucible

Usage Information of 99% Alumina Crucibles:

1.The crucible should be dried in an oven at a temperature of about 105°C for 120 minutes to remove moisture before first use.

2.Do not heat it directly with gasoline gun, acetylene gun or alcohol torch to prevent cracking due to uneven heating of the crucible.

3.Avoid quick heating up and cooling down. Heating temperature ≤1200 ℃，the rate of temp change should be <5 ℃ / min; Heating temperature ＞1200 ℃，the rate of temp change should be <4 ℃ / min.It is recommended that cool the temperature down with electricity powering on, otherwise the crucible may crack due to quick cooling down of oven if the electricity turned off.

4.The distance between the product and the heating elements (such as carbon tube, silicon molybdenum rod or heating wire, etc.) should be >2cm.

5.It is recommended to use a pad, which is made of corundum substances and other temperature-resistant substances(available in our store) to underlay the crucible to allow the air flow freely. In this way, the service life of crucibles can be prolonged.

Size details:

Item NO.	Cylinder external height (mm)	Total external height (mm)	Total internal height (mm)	Bottom outer diameter (mm)	Top inner diameter (mm)	Top outer diameter (mm)	Wall thickness (mm)
CS-SS-001	70	81.3	69.5	10.4	7.7	10.9	1.6
CS-SS-002	122	138	131	13.1	10.3	13.6	1.5
CS-SS-003	63.5	77.6	62.8	18	14.3	18.2	1.8
CS-SS-004	90	104	89	14.2	11	14.5	1.6
CS-SS-005	76.6	97.8	76.3	24	20.7	24.4	1.8
CS-SS-006	124	138	124	17.8	13.1	17.8	2.2
CS-SS-007	113.5	129.5	112.3	24.5	20.7	25.2	2.1
CS-SS-008	24	34	23	10	6	10	2
CS-SS-009	70	85	69.5	15	12	15	1.5
CS-SS-010	66	77	66	12	9	12	1.5
CS-SS-011	80	94	79.5	9.5	7.5	9.5	1
CS-SS-012	72	102	71	10	7.2	10	1.4
CS-SS-013	45	60	45	12.5	9.7	12.5	1.4

Applications:

Main purpose of crucible and boats is as a container for analysis and firing of material and product applied in various industries. For example: analysis of coal, melting of the metal, analysis and firing of chemical raw materials, analysis and melting of glass, analysis and firing of rare earth materials and mineral,firing of high temperature items such as ceramic products and melting of single-crystal raw materials.

Features:

1.High alumina purity, Al2O3 90% 95% 99% 99.5% 99.7% for choose,good corrosion resistance.

2.High temperature resistance, 1600℃ in long use,1800℃ in short use.

3.Good thermal shock, no easy to crack.

4.High slip casting density.

Parameters of Alumina Ceramic:

Item			Test Condition	95% Al2O3	99% Al2O3	99.5% Al2O3
Physical properties	Density	g/cm3		>3.6	3.89	3.96
Physical properties	Moisture absorption	%		0	0	0
Mechanical properties	ROHS Hardness			≥85	≥89	≥89
	Flexural strength	psiX103	20℃	358	550	550
	Compressive strength	psiX103	20℃	2068(300)	2600(377)	2600(377)
	Fracture toughness	Mpa.m3/2	K(l c)	4.3	5.6	6
Thermal properties	Maximum use temperature	℃		1450	1600	1650
	Thermal expansion coefficient	1X10-6/℃	(25-1000℃)	7.6	7.9	8.2
	Thermal shock resistance	℃	Tc	250	200	200
	Thermal conductivity	w/mok	20℃	16	30	30.4
Electrical properties	Volume resistivity	Ohm/cm2	100℃	>1013	>1014	>1014
	Dielectric breakdown strength	KV/mm		8.7(220)	8.7(220)	8.7(220)
	Dielectric constant	(E)	1MHz25℃	9	9.7	9.7
	Dielectric constant (100MHz)	(E)	9.5

Production Process:

Packing:

Our Certificate:

FAQ

Q1. What information should we supply to get a quote?

Please offer the specification of ceramic boat for furnace, such as shape, dimension, quantity, application etc.

Q2. What type or material should we choose?

If you are not sure about the type/material needed, please kindly supply more details about working condition and application. Then our technical staff will check and offer you the most suitable type or material.

Q3. How can we place an order?

You can contact any sale person by email, Skype, WhatsApp, WeChat and so on.

And more details of the products you supplied will be helpful to get the targeted responses.

Q4. How long our order can be finished?

A mass of semi-finished products and standard sizes are available in stock, and according to the final confirm with the sales for bulk production or customized products.

Q5. What do you do on quality control?

For every batch, each step and finished products will be inspected when producing by QC department.

Q6. How can we get the sample?

Free samples can be supplied after communication, but freight is for your account.

Q7. Can you accept OEM/ODM?

Yes, your goods will be produced exactly according to your drawings or inquiry.

Contact information:

Ella Yu

Email:Ella@csceramic.com

Tel: 0086-731-23455639 Fax: 0086-731-23455639

Mobile / WhatsApp / WeChat: 0086-15377338375

ADD: Chashan Town Liling City Hunan Province ,China.