3－1－7 Fukami-higashi, Yamato-shi
Kanagawa-ken, Japan 〒242-0012
TEL (+81) 46-261-4320
FAX  (+81) 46-263-3819

Access to our company (by bus)

Kanagawa Chuo Kotsu→Yamato Station→"For Tsuruma Higashiguchi" via Ichinoseki

• Bus schedule (weekdays)
• Bus schedule (Saturdays)
• Bus schedule (Sundays, holidays)

Kanagawa-ken, Japan 〒242-0012
TEL (+81) 46-261-4320
FAX  (+81) 46-263-3819

General inquiries:here

For inquiries about metal fatigue identification device:here

For inquires about our business:here

This device can capture quantitative subtle changes in electric conductivity and magnetic permeability in high sensitivity, and by a magnetic sensor system that differs from the traditional overflow style sensor system.

2.Characteristics

1. The sensor can measure parts of flat sizes with around 30mmφdiameter.
2. To measure the fatigue damage value, non-fatigue parts need to be compared; however, in some facilities or institutions, and depending on some devices, there are parts which have almost no stress effect. In this case, it is possible to estimate the fatigue damage value of metal fatigue damaged parts by measuring the comparison value of those parts.
3. This device advances metal fatigue, and can measure regularly the parts, which have an anxiety of breaking. It also estimates the progress value of metal fatigue by the change tendency of its numerical value.
4. This device is not used for measuring the length or depth of cracks. The purpose of this device is to inspect and manage metal fatigue before destruction occurs by evaluating the measured value tendency, and by monitoring the fatigue parts.
5. This device can also capture the change of numerical value in the metal fatigue before crack occurrence.

3.Others

1. With MFD102B it is recommended to monitor fatigue parts of facilities, and check their safety regularly by measuring the MFD value (electromagnetic substitution characteristics) regularly at various places in the facilities.
2. Using the metal fatigue identification device, we can provide every kind of measure and research analysis on metal fatigue.

This device is a product developed through the guidance and support of the Japan Small and Medium Enterprise Corporation, Kanagawa Industrial Technology Research Institute, and Yokohama National University.

(Construction model) Automatic operation of products related to food array devices

(Construction model) General industrial mechatronics labor reduction equipment

Piston rod

Deep, round type

Corner insert type

Shank type 305

Punch

Injection cylinder piston rod

Rod

Click the icons beside the keywords to see more detailed information.

Others

Total weight should be within 3t.
Please inquire for various measures, and we will submit an estimate accordingly.

Delivery Acceptance of the Customers Parts

Customers assembly parts or single parts are accepted by us.

Overhaul and Condition Diagnosis

We thoroughly inspect conditions of the customers'part for damage, corrosion or workability before making decision on repair or a whole renewal with customers.

New Packing / Repair / New Production

Packing and O-ring are all replaced.
Some special packings are provided by customers.

Some Repair case

• When a rod is found damage through the process of Grinding→Plating→Grinding→Buffing , plating may be removed in some case.
• When a cylinder has damage and corrosion, honing treatment is applied.
  
• When a rod is bent, the bending repair kit is used for correction.

Performance Inspection

Photos of the Test Equipment during the performance test

Our inspections are lised as follows

• Stroke Inspection
• Inspection of leakage for outside/inside
• Inspection of minimum operating pressure
• Other inspections requested by customers

Paint

Refreshed with new paint!

We produce oil pressure cylinders that match all fields, such as servo cylinders, press machines, steel manufacturing machines, construction vehicles, and industrial machineries based on extensive results and experience.

For repairs and overhaul, please refer to the page on overhaul of oil hydraulic cylinders.

Hydraulic equipment

We assist from design to production of hydraulic systems for hydraulic power units, onsite plumbing, and others, that are compatible with the mechanical equipment.

	Servo cylinders
	Oil pressure cylinder with rotation fitting
	Hydraulic power unit

Finished round parts using a lathe

Piston	Piston
Piston	Cylinder cover
Piston	Piston

ＡＣ100Ｖ±10％ 50／60Ｈz

0-±0.2Ｖpeak

Product appearance and specifications may change without notice due to improvements.

This device is a product developed through the guidance and support of the Japan Small and Medium Enterprise Corporation, Kanagawa Industrial Technology Research Institute, and Yokohama National University.

The outline of the measuring system takes place in the Signal Transmission Dept., which drives the excitation coil, and releases reference signals.
The measuring sensor is also composed by the Excitation Dept. and the Detection Dept.

The signal detected by the detector coil includes elements of different amplitudes and phases by the level of fatigue; therefore, it is calculated with the reference signals, and the results are shown digitally to the Display Dept.

The MFD value of the measurement result is an electromagnetic substitution property value that displays the above contents digitally.

This device is a product developed through the guidance and support of the Japan Small and Medium Enterprise Corporation, Kanagawa Industrial Technology Research Institute, and Yokohama National University.

Measurement sample of 60 km railway rolling fatigue

Change of MFD value (electromagnetic substitution characteristic value) by the forged frequency of forged metal mold and fatigue crack occurrence

(Sample of MFD value decrease with the forged frequency of forged metal mold punch for automobiles)

Photo 1: Sample of measure fatigue damage rate by drill abrasion (application example of U-type sensor)

Measurement result of rolling fatigue value for Collo axis bearing

Measurement of rolling fatigue of bearing materials (SUJ2)

Installation condition of special measurement treatment device for collo axis and magnetic sensor

Shock fatigue by golf club heads (Ti alloy)

Fatigue damage rate graph by shock fatigue tests with golf club heads

Result of fatigue test for stainless steel (SUS304) (non-magnetic materials)

Aluminum alloy (ultra-duralumin A7075)

Measurement result of fatigue damage rate for aluminum alloy (ultra-duralumin A7075P) by tensile fatigue test

Proposal for new maintenance methods adaptable to current situations

Condition-based maintenance system

What is CBM（Condition-Based -Maintenance）?

We conduct conventional detailed inspection regularly once a year for condition-based maintenance using the TMB method through overhaul to acquire the level of fatigue damage,

However, with the CBM method, we can always measure and inspect parts, and detect and handle unusual conditions at an early stage to prevent accidents.

We propose a "predictive maintenance" method by regular inspection, and by using a measurement system through the metal fatigue identification device.

Measures are taken based on several previous damage accident cases to monitor the metal fatigue damage level before fatigue cracks occur.

For this purpose, a regular monitoring system through the predictive maintenance management system is conducted,

This device is a product developed through the guidance and support of the Japan Small and Medium Enterprise Corporation, Kanagawa Industrial Technology Research Institute, and Yokohama National University.

In the case of materials for steel parts, the residual stress is eased in the beginning right after the start of production use, and the MFD value increases slightly, but decreases gradually with metal fatigue though its continuous use.

A period of stability occurs after the MFD value decreases completely, then
rises again in the end by the plastic flow and by fatigue cracks.

The inflection point of the rise of the MFD is discovered, and serves as an alarm of metal fatigue occurrence.

This change in MFD value can be seen in the process of metal fatigue of many parts in many production facilities or institutions.

The installation of a metal fatigue identification device allows such changes to be grasped and predicted accurately in a timely manner.

This device is a product developed through the guidance and support of the Japan Small and Medium Enterprise Corporation, Kanagawa Industrial Technology Research Institute, and Yokohama National University.

Q2・What is the thickness for hard chrome plating?

Q3・What are the possible materials that can be processed with hard chrome plating?

Q4・What are the parts for hard chrome plating?

Q5・What is hard chrome plating overhaul?

Q6・What is the hardness standard required for hard chrome plating?

Q7・What shapes can be produced with hard chrome plating?

Q8・What is the thickness measurement for hard chrome plating?

Q9・What is surface roughness in hard chrome plating?

Q10・Do you handle hard chrome plate peeling?

Q11・How do you handle removal of hydrogen embrittlement in hard chrome plating?

A.1

The hard chrome plating tank has two tanks; one, with measurements of 2m W x 4m L x 3m depth; and, the other one, 1m W x 2m L x 1.5m depth.

A.2

We process hard chrome plating, as instructed in the drawing plans, to meet quality standards. The hard chrome plating thickness is calculated by the difference of the thickness before and after plating.

A.3

The materials we have processed for hard chrome plating are S45C・SS・SNCM・SKS・SUS・SCM・FCD.
We accept inquiries regarding other materials.

A.4

We can produce hard chrome plating by parts. We wrap masking tape around the parts that are not to be plated to avoid electroplating.

A.5

For the process of overhauling cylinder rods, we repair by using the methods of grinding, honing processing, hard chrome plating, and others, based on the damage condition.

A.6

The hardness of hard chrome plating meets the standards of Vickers hardness over 750 as regulated for industry chrome plating by JIS H 8615. The recent result of our company's hardness quality test was SCM440 = 1004-1086 and S45C = 1049-1052.

A.7

The shapes that can be produced with hard chrome plating are round parts and angular parts. For each shape, we can produce hard chrome plating for the entire part, external parts, or internal parts, depending on the customer's requests. We can also produce hard chrome plating for complicated shapes, such as uneven metal molds by preparing electrode devices.

A.8

The thickness measurement of hard chrome plating is calculated by using a micrometer or a cylinder gauge for round parts, and is measured before and after plating. In the case that we are not able to measure with the above method, we calculate the thickness of hard chrome plating by using a magnetic force system test method.

A.9

For drawing plans that indicate roughness on the surface for hard chrome plating, we conduct a mixed method of grinding and buffing before and after plating to meet quality standards. Currently, we produce piston rods with a surface roughness of 0.8S.

A.10

We conduct the peeling process for hard chrome plating. After the peeling process, we perform plating again.

A.11

For instructions regarding the removal of hydrogen embrittlement after plating hard chrome, we conduct a baking method, as referred by "JIS H 8615 attachment 4."