Electroforming Precision Bellows

Features

■ High precision

■ Stain resistance

■ Low leakage rate

■ The tube wall thickness can be 0.008 millimeter

Applications and industries

■ Instruments and apparatus

■ Automatic communication control

■ Medical facility

■ Aeronautic & Astronautics

■ Military equipment

Product Overview

There are 5 kinds of metal bellows: rolled, hydroformed, welded, chemically deposited, electroformed. The electroplate metal onto a mandrel with aluminum material.

The mandrel will be dissolved after electroforming.

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Product Parameters

Techincal Indicators

1. Environmental suitability
Temperature				-196℃～176℃			1. The elasticity remains in liquid nitrogen and the mechanical strength is improved. 2. The high temperature limit is about 176℃, which will lead to bellows embrittlement or annealing
Corrosion resistance				Corrosion resistance in dry air and alkaline environment					· Not resistant to acid, salt and sea water
Magnetic characteristic				Magnetic
2.Specification and size
No	Inner diameter (mm)	Outer diameter (mm)	Pitch of waves (mm)		Max splash n	Wall thickness (mm)		Max pressure resistance (Mpa)		Single wave steel K			Maximum allowable single-wave displacement (mm)	Active area S (cm²)
										Axial	Angular	Horizontal
										N/4mm	Nm/Grad	N/mm
1	2	3	0.5		10	0.025		1.6		47	0.96	2600	±0.025	0.05
2	2	3.5	0.5		10	0.025		0.61		16	0.45	1200	±0.04	0.061
3	2	4	0.5		10	0.025		0.29		7.4	0.27	730	±0.06	0.073
4	4	5.5	0.5		10	0.03		0.85		55	3.8	10000	±0.04	0.179
5	4	6	0.5		10	0.03		0.42		26	2.1	5600	±0.06	0.199
6	4	7	0.8		16	0.03		0.22		7.4	0.82	870	±0.12	0.243
7	6	8	0.5		10	0.03		0.44		38	5.5	15000	±0.06	0.387
8	6	9	0.8		16	0.03		0.21		11	2	2100	±0.14	0.448
9	6	10	1.2		24	0.03		0.15		4.5	1	480	±0.20	0.513
10	8	11	0.8		16	0.04		0.35		35	9.5	10000	±0.11	0.715
11	8	12	1.2		24	0.04		0.24		14	4.6	2200	±0.19	0.796
12	8	13	0.2		24	0.04		0.14		7.8	2.9	1400	±0.26	0.882
13	10	13	0.8		16	0.04		0.35		44	17	18000	±0.11	1.045
14	10	15	1.2		24	0.04		0.14		10	4.9	2300	±0.28	1.24
15	10	17	2		40	0.04		0.08		3.4	2.2	370	±0.43	1.46
16	12	16	1.2		24	0.05		0.33		42	24	11000	±0.16	1.55
17	12	18	2		40	0.05		0.19		12	8.7	1500	±0.32	1.79
18	12	20	2		40	0.05		0.094		5.5	4.9	840	±0.49	2.05
19	16	21	1.2		24	0.06		0.28		53	52	24000	±0.19	2.7
20	16	24	2		40	0.06		0.13		13	16	2800	±0.47	3.18
21	16	27	2		60	0.06		0.073		4.8	7.7	590	±0.72	3.71
22	20	26	2		40	0.07		0.31		55	83	14000	±0.28	4.18
23	20	30	3		60	0.07		0.14		12	25	1900	±0.62	4.97
24	20	33	3		60	0.07		0.062		6	15	1100	±0.92	5.63
3. Surface treatment (select according to the demand )
Gold plated or silver plated					Improve the weld-ability, electrical conductivity, turbidity resistance of bellows
Organic coating					Improve the turbidity resistance of bellows

Production process

PC90D Monocrystalline Silicon Differential Pressure Sensor

Testing Equipment

Bellows Bellows

Certificate

Bellows

Company profile

PCM580 Digital Pressure Gauge (Φ80mm)

Nanjing Wotian Technology Co., Ltd. was established in 2005. It is an outstanding top sensor mkanufacturing enterprise in Jiangning District. The company was rated as Nanjing Engineering Technology Research Center and Nanjing. Municipal Engineering Research Center, Nanjing Enterprise Technology Center, Nanjing Postdoctoral Innovation Demonstration Base; is the unit that formulated the national standards for "Silicon Piezoresistive Pressure Sensitive Chips" and "Silicone Pressure Sensors". It is the leading domestic manufacturer of pressure sensors, with core technology of diffused silicon pressure sensor pressure transmitter, level sensor and temperature sensor and existing staff 305. The annual production of pressure sensors is more than 2 million. The products have been exported to more than 70 countries and regions. Nanjing Wotian was awarded the honorary title of "Sensor Application Program Demonstration Enterprise" by the Ministry of Industry and Information Technology in 2019. "Creating value for customers" is the goal that enterprises always pursue. As leading manufacturer in the domestic pressure sensor industry, the company will revitalize China's pressure sensor business as its own responsibility, work diligently, step by step, strive to make pressure sensors better, and provide customers with cost-effective sensors. Nanjing Wotian Technology Co., Ltd. has passed ISO9001-2015 quality management system certification and TS16949 certification for the automotive industry.

Company advantage

Mass production

We have one production center in Nanjing and one production center in Anshan with 20,000㎡plant and 170 units of production equipments. The main annual capacity of sensors is about 2,000,000 pieces.

Imported equipments

We imported 20 sets of pressure controller and 150 units of testing ovens to our production line.

Informatization management

We have the information management system of CRM, PLM, ERP, MES and DINGDING etc.

Comprehensive testing

We have our own lab and testing equipment such as lightning stroke, surging, static electricity, vibration, high-low temperature impact test and helium mass-spectrum leak detection.

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