Products

Alumina Threaded Rod

Brand: Yunxing
Product origin: China
Delivery time: Depending on product size and quantity
Supply capacity: 5,000-10,000/month(Looking for distributors)

1. Alumina threaded rods can withstand extremely high temperatures. 2. Alumina threaded rods are impressive hardness and mechanical strength 3. Alumina threaded rods have high corrosion resistance and chemical reactivity 4. alumina threaded rod maintains resists wear in a grinding. 5. Large stock and fast delivery.

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Alumina Threaded Rod

Alumina Threaded Alumina Threaded Rod

Advantages of Alumina Threaded Rod

Alumina has an extremely high melting point, enabling alumina threaded rods to maintain a stable physical form and mechanical properties in high-temperature environments. Its excellent chemical inertness ensures that alumina threaded rods are not affected by moisture and salt spray, always maintaining good working conditions. Alumina threaded rods can withstand high-frequency and high-intensity friction, and still maintain precise thread dimensions and good connection performance after long-term use.

Applications of Alumina Threaded Rod

1. In high-temperature kilns and other equipment, alumina threaded rods can work stably for a long time in high-temperature environments above 1200 ℃.

2. In a marine environment or a humid industrial environment, ordinary metal threaded rods are extremely prone to rusting, while alumina threaded rods are not affected by moisture and salt spray and can always maintain a good working condition.

3. In occasions such as machining and textile machinery that require frequent friction and rotation, alumina threaded rods can withstand high-frequency and high-intensity friction.

4. In a high-frequency electric field environment, the dielectric loss of alumina threaded rods is extremely low. It will not affect the performance of the equipment due to excessive heat generated by dielectric loss, ensuring the stable operation of the electrical system.

Size,Performance index

Alumina round rods Specification Table
Number	Diameter		LENGTH MM	Number	Diameter		LENGTH MM
Number	INCH	MM	LENGTH MM	Number	INCH	MM	LENGTH MM
1	0.031	0.79	≤1250	25	0.630	16	≤1500
2	0.039	1		26	0.669	17
3	0.059	1.5		27	0.688	17.5
4	0.062	1.58		28	0.748	19
5	0.079	2	≤1500	29	0.750	19.05
6	0.100	2.5	≤1500	30	0.787	20
7	0.118	3	≤1750	31	0.827	21
8	0.125	3.18		32	0.866	22
9	0.157	4		33	0.906	23
10	0.187	4.75		34	0.945	24
11	0.197	5		35	0.984	25
12	0.236	6		36	1.000	25.4
13	0.250	6.35		37	1.063	27	≤1250
14	0.276	7		38	1.126	28.6	≤1250
15	0.312	7.92		39	1.181	30	≤800
16	0.315	8		40	1.250	31.75
17	0.333	8.47		41	1.378	35
18	0.375	9.53		42	1.500	38.1
19	0.394	10		43	1.575	40
20	0.433	11		44	1.654	42
21	0.472	12		45	1.750	44.45	≤500
22	0.500	12.7		46	1.875	47.6	≤500
23	0.551	14	≤1500	47	1.969	50	≤300
24	0.591	15	≤1500	48	2.000	50.8	≤300

Alumina ceramic performance index (Notice of Correct in Leakeage Rate）

NO.	Property	Unit	Alumina
1	Al2O3	%	>99.3
2	SiO2	%	—
3	Density	g/cm3	3.88
4	Water absorption	%	0.01
5	Compressive strength	MPa	2300
6	20℃ leakage rates	Torr・L/sec	>10-11=1.33322×10-12Pa・m3/sec
7	Twisting in high temperature	mm	0.2 allowed in 1600℃
8	Bonding in high temperature		not bonded in 1600℃
9	20—1000℃ coefficient of thermal expansion	mm.10-6／℃.m	8.2
10	Thermal conductivity	W/m.k	25
11	Electric insulation strength	KV/mm	20
12	20℃direct current insulation resistance	Ohm/cm	1014
13	High-temperature insulation resistance	1000℃ MΩ	≥0.08
13	High-temperature insulation resistance	1300℃ MΩ	≥0.02
14	Thermal shock resistance		4 times not cracked in 1550℃
15	Maximum working temperature	℃	1800
16	Hardness	Mohs	9
17	Flexural strength	Mpa	350

Composition table

NAME	CONTENT(%)
Al2O3	99-99.3(99.5)
SiO2	0.3-0.5
CaO+MgO	0.2-0.3
K2O+Na2O	0.2-0.35
Fe2O3	<0.1
OTHER	<0.05

Quality testing standards

1. Visual inspection of the rod for any signs of damage or irregularities.

2. Measurement of the length, width, and thickness of the rod to check for accuracy.

3. Checking for any leaks or pinhole defects in the rod.

4. Verification of the material and chemical composition of the rod.

Factory Equipment

Slip casting moulding: Inject the prepared slurry into the gypsum mold and let it stand for a period of time to allow the gypsum mold to absorb moisture. The slurry forms a uniform body on the inner wall of the mold.
Injection moulding: Inject a slurry containing paraffin into a metal mold at a certain temperature and pressure, and after the body cools and solidifies, perform demolding to prepare ceramic bodies.
Extrusion moulding: Suitable for long tube products, the powder is extruded into shape through an extruder.