Qualıty | mtmesa

How do we Proceed R&D?

Basic research is the first stage in Mesa Makina R&D center, at this stage the needed service or product is determined.The International standards, conceptual researches, foreign literatures, competitor analysis and market researches are handled in all details, then the research progresses thru both theoretically and experimentally.

The second stage in our R&D activities is applied research. It is aimed to draw a conclusion thru the tools and methods used.The Research results are built on data which obtained in basic research.

In experimental development, which is the final stage, a new product is design, simulates and optimizes. After the research is completed, a new product is designed and produced with the information obtained from the research, and its compliance with international standards is verified by tests. The final stage also includes improving the product.

Inductotherm brand dual track located in our production facility has an energy capacity of 900 kW/hour; With induction melting furnaces capable to melting metal of 1500 kgs/ hour, 2pcs holding furnaces with 500 kg/ hour aluminum melting capacity, 2pcs aluminum casting and holding furnaces with a capacity of 500 kg, in accordance with international norms and standards, taking into account customer special requests, lamellar graphite (grey) cast iron, spheroidal graphite cast iron, next generation spheroidal graphite cast iron, high alloy castings and aluminum castings can be produced.

Carbon equivalent, saturation degree, carbon and silicium values, temperature of the liquid metal in the furnace, spheroidaling tendencies of the material can be measured in a short time with the integrated thermal analyzer on furnace for the products to be produced.

In addition, with the help of molten metal Oxford Foundry Master and Metal-Lab brand spectrometer. It is ensured that production is made in the desired standards by subjecting it to spectral analysis.

Density index measurement and degassing processes required for the aluminum casting process are also provided within our company. Our company, which mainly produces with the green sand molding method, It has the infrastructure to analyze the moisture content, wet compressive strength, gas permeability, compactability value, wet shrinkage value, and mold sand grain size of the molds to be prepared with Simpson and George Fisher brand product testing devices in the sand laboratory.The Manufacturing works are carried out of the products which are designed in R&D engineering moulds/ models, apparatus/fixture Manufacturing. Then, model information cards, FMEA operation orders are prepared and delivered. Prototype design checks, machining tolerances and production are checked. The related International standards and practices defined for the product are applied. By ensuring of all conditions the mass production is started by means of continuous control on pre-mass production.

Filter selection should be decided based on operating conditions. The oil which is used for operating fluid, should be selected according to viscosity when it is operating conditions.

High Pressure Inline Filters, which are tested under 10 μ filter element and ΔP=1 bar according to DIN24550 Standard, should be preferred according to different filtering sensitivities and the viscosity of the fluid used under operating conditions.

In using filter with bypass, bypass pressure is recommended that it need to be minimum 3 times more filter differential pressure.

ΔPtotal=ΔPhousing+ΔPfilter element

ΔPhousing can be found at Characteristic Curves Chapter

ΔP filter element= Q x (Gc/1000) x (v/30)

Q= It is the volumetric flow value of the system where the filtration will be made.. (l/min)

V= It is the viscosity value of the fluid used in the system where the filtration will be made under operating conditions.. (mm²/s)

GRADIENT COEFFICIENT (Gc)
	3 μ	6 μ	10 μ	20 μ	25 μ
040	57,98	34,39	21,75	10,92	8,72
063	42,34	30,55	16,98	8,85	6,19
100	16,98	10,56	7,59	5,83	3,37
160	13,16	9,98	6,56	4,78	3,81
250	4,25	2,95	2,12	1,56	1,31
400	1,97	1,58	0,79	0,62	0,55
*Coefficients obtained according to ISO 16889 (ΔP: 1 bar) at 50°C Temperature (30 mm²/s) for HLP46 OIL. (mbar/(l/min))

Hydraulic Fluid Power — Filters — Evaluation of Differential Pressure Versus Flow

ISO 3968:2017 specifies a procedure for evaluating differential pressure versus flow characteristics of hydraulic filters and constitutes a basis for agreement between the filter manufacturer and user.

It also specifies a method for measurement of the differential pressure generated at different flow rates and viscosities by the relevant parts of a filter assembly, spin-on and any valves contained within the filter which are in the flow stream.

Hydraulic Fluid Power — Fatigue Pressure Testing of Metal Pressure-Containing Envelopes — Part 1: Test Method

ISO 10771-1:2015 specifies a method of fatigue testing the pressure-containing envelopes of components used in hydraulic fluid power systems under sustained steady cyclic internal pressure loads.

This part of ISO 10771 is only applicable to component pressure-containing envelopes that

- are manufactured from metals,

- are operated at temperatures that exclude creep and low-temperature embrittlement,

- are only subjected to pressure-induced stresses,

- are not subjected to loss of strength due to corrosion or other chemical action, and

- might include gaskets, seals, and other non-metallic components; however, these are not considered part of the pressure-containing envelope being tested

Fluid Power - Hydraulic Filters - Part 1: Definitions, Nominal Pressures, Nominal Sizes, Fitting Dimensions

HIGH PRESSURE INLINE FILTER ELEMENTS
Filter Elements	A	B	C	D
40 l/dk.	45	22.2	100	45
63 l/dk.	45	22.2	160	45
100 l/dk.	45	22.2	250	45
160 l/dk.	80	40.2	160	80
250 l/dk.	80	40.2	250	80
400 l/dk.	80	40.2	400	80

TANK MOUNTED RETURN LINE FILTER ELEMENTS
FİLTER ELEMENTS	A	B	C	D	E
40 l/dk.	58	32.2	32.2	58	100
63 l/dk.	58	32.2	32.2	58	159
100 l/dk.	58	32.2	32.2	58	249
160 l/dk.	99	52.8	52.8	99	159
250 l/dk.	99	52.8	52.8	99	249

Hydraulic Fluid Power – Filters – Multi-Pass Method for Evaluating Filtration Performance of a Filter Element

ISO 16889:2022 is a multi-pass filtration performance test with continuous contaminant injection for hydraulic fluid power filter elements;

For the background interlaboratory study used to verify the test methodology

— a procedure for determining the contaminant capacity, particulate removal and differential pressure characteristics;

— a test currently applicable to hydraulic fluid power filter elements that exhibit an average filtration ratio greater than or equal to 75 for particle sizes ≥ 25 µm(c), and a final reservoir gravimetric level of less than 200 mg/L;

It is necessary to determine by validation the range of flow rates and the lower particle size limit that can be used in test facilities.

Hydraulic Fluid Power - Filter Elements - Verification of Collapse/Burst Pressure Rating

ISO 2942:2018 specifies a bubble-point test method applicable to filter elements used in hydraulic fluid power systems. It can be used both to verify the fabrication integrity of a filter element (by checking the absence of bubbles) and to permit the localization of the largest pore of the filter element by determining the first bubble point.

Verification of fabrication integrity is used to define the acceptability of the filter elements for further use or testing.

The first bubble point is established through continuation of the fabrication integrity test. It is under no circumstances a functional characteristic of a filter element; in particular, it cannot be used to estimate filtration rating, efficiency or retention capacity and is intended to be used for information only.

Hydraulic Fluid Power – Filter Elements – Verification of Fabrication Integrity and Determination of The First Bubble Point

ISO 2941:2009 specifies a method for verifying the collapse/burst pressure rating of a hydraulic fluid power filter element, i.e. the capability of a filter element to withstand a designated differential pressure at the normal (i.e., intended direction of) flow, by means of pumping contaminated fluid through the filter element until either collapse/burst occurs or the maximum expected differential pressure is reached without element failure.

Hydraulic Fluid Power — Filter Elements — Verification of Material Compatibility with Fluids

ISO 2943:1998 specifies a method of verifying the compatibility of materials comprising a hydraulic fluid power filter element with a designated fluid, by verifying the ability of the filter element to maintain its collapse burst rating after being subjected to the designated system fluid at a high and/or low temperature.

The filter element mounting seal is not included as part of the element.

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MT450 Series Technical Data Sheet