◆ Wuxi Zhanghua Pharmaceutical Equipment Co., Ltd./ Jiangsu Gurion High Technology Co. Ltd. is a team aiming to develop into a high-tech enterprise, focusing on the development and sales of portable non-destructive mechanical properties and residual stress testing devices.

◆ The team independently developed the mechanical properties and residual stress detector based on the indentation method/ pressing energy difference method, and designed a variety of supporting fixtures to make the product

suitable for different working conditions on site.

◆ The team is currently positioned in the field mechanical properties and residual stress testing industry of energy equipment such as pressure vessels and pressure pipelines

◆ Mainly to domestic third-party testing institutions and first-line production units

◆ The technology won the Gold Medal of the Geneva International Exhibition of Inventions.

◆ To special pressure equipment, long-distance transmission pipelines and remanufacturing

major energy equipment as service objectives.

◆ It can provide first-hand test data for finite element simulation, failure analysis, life evaluation, safety assessment, etc.,

◆ Realize the test support of both safety and economy

◆ Committed to the research and development of mechanical properties and residual stress detector series, related testing technical services.

Features

◆ On site non-destructive

◆ Lightweight and portable

◆ Accuracy assurance

◆ Applicable to multiple scenarios

Advantages

◆ Strength online test

◆ Stress nondestructive testing

◆ Welding process evaluation

◆ Heat treatment program customization

◆ Equipment failure analysis

◆ Equipment life assessment

Mechanical performance testing

1. Comparison with uniaxial tensile experiments

Test object: tensile specimen

Testing materials: multiple homogeneous materials

Test method: ball indentation method, uniaxial tension

Test equipment: PMT-1000

	Yield Strength 60.2(MPa)			Tensile strength 6b(MPa)
	Indentation	Stretch	Error	Indentation	Stretch	Error
Q345R	435	412	5%	595	547	8%
15CrMo	353	340	3.7%	471	499	-5.9%
45Number steel	353	333	5.7%	541	560	-3.5%
12MnNiVR	482	490	-1.6%	662	674	-1.8%

2. Comparison of steam pipelines before and after service

Test object: steam pipeline

Test material: 12Cr1MoV

Test method: ball indentation method, uniaxial tension

Test equipment: PMT-1000

		Yield strength 6o.2(mpa)			Tensile strength 6b(mpa)
	Ball press	Stretch	Error	Ball press		Stretch	Error
Raw steel	309.7	305.9	1%	510.0		480.7	6%
Service steel	249.3	230.7	8%	492.6		474.3	4%

3. Tank strength test

Test object: storage tank

Test material: Q235B

Test method: ball indentation method

Test equipment: PMT-1000

	Yield Strength	tensile strength
1	262.95	477.86
2	260.80	476.21
average	261.88	477.04

4. Strength testing of steel pipes in service

Test object: Service steel pipe

Test material: 20 # steel

Test method: ball indentation method

Test equipment: PMT-1000

		Yield Strength	tensile strength
	1	293.31	533.49

5. Strength test of high-pressure waste heat exchanger

Test object: high-pressure waste heat exchanger

Test material: CrMoV steel

Test method: ball indentation method

Test equipment: PMT-1000

Test serial number	from center of weld (mm)	Yield Strength (MPa)	Tensilestrength (MPa)	workhardening index （n)
1	70	438.787	585.323	0.194
2	35	454.357	608.69	0.158
3	0	520.633	678.637	0.174
4	35	454.079	607.626	0.160
5	70	431.036	571.466	0.165

Residual stress testing

1. Comparative experiment

Test object: high-pressure waste heat exchanger

Test material: CrMoV steel

Test method: ball indentation method

Test equipment: PMT-1000

Material	6x(Applied Value)	6x(Actual Value)	Absolute Error	6y(Applied Value)	6y(Actual Value)	Absolute Error
S45c	268	262	-6	239	257	18
	144	177	33	249	284	35
	77	87	10	287	267	-20
12cr1mov	192	210	18	15	18	3
	45	22	-23	174	159	-15
	96	78	-18	191	184	-7

2. Additive manufacturing specimens

Test object: Residual stress of additive manufacturing specimens

Test material: Inconel718

Testing methods: indentation energy difference method, X-ray diffraction method

Test equipment: PMT-1000

3. Thick walled cylinder weld seam

Test object: Residual stress in welded specimens of thick walled cylinders

Test material: 15CrMoR

Testing methods: indentation energy difference method, indentation strain method

Test equipment: PMT-1000

4. Large heat exchanger tube plate circumferential weld

Test object: Residual stress in the circumferential weld seam of large heat exchanger tube sheets

Test material: Q345R

Test method: Pressure energy difference method

Test equipment: PMT-1000

Cylinder Side	Longitudinal Stress (Mpa)	Transverse Stress (Mpa)
1	165	-21
2	164	13
3	123	26

5. Circumferential weld seam of heat exchanger cylinder

Test object: Residual stress of the circumferential weld seam of the heat exchanger cylinder after heat treatment

Test material: Q345R

Test method: Pressure energy difference method

Test equipment: PMT-1000

Applicable to multiple scenarios

◆ Residual stress detection of longitudinal weld seam of cylinder section

◆ Residual stress detection of reactor cylinder closure weld seam

◆ Residual stress detection of the welding layer on the inner wall of the cylinder

◆ Residual stress detection of welds in heat exchangers before leaving the factory

Basic Information

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