Basic Info.
Model NO.
customization or standard
Casting Method
Sand Casting
Surface Treatment
Galvanized
Machining Tolerance
+/-0.01mm
Certification
CE, RoHS, ISO 9001:2008
Material
Carbon Steel,Ductile Iron, Malleable Iron
Trademark
RH METAL or OEM
Transport Package
Seaworthy Packing
Specification
customization
Product Description
ABOUT US
Dalian Ruihang Metal product Co.,Ltd. (for short :RH METAL),founded in year of 2002,specializing on OEM mechanical parts manufactured by process of casting,machining,welding and fabrication etc.RH METAL situates in Dalian Free trade Zone with about 6600M2 head office building and 50000M2 machining workshop.RH METAL has International advanced-level sand casting auto production line and machining equipments such as CNC,Numerical lathes,Laser cutting machines,CMM ,carbon sulfur analyzer, Spectrometer,ultrasonic fault detector etc.
The capacity of all facilities reach 6000tons of casting parts,70% of all products are for overseas market,including North America ,Europe,Japan,South Korea and Southeast Asia etc.Which involve in various mechanical spare parts,automotive accessories,valves,marine ironware etc.The raw material consists of ductile iron, grey iron,stainless steel,carbon steel&various alloy steel,copper,aluminum and non ferrous metals,DRH can deliver the customer castings,semi-finished parts and finished parts respectively and accordingly.
Metal Casting Quality Standards
The most important aspect in guaranteeing the reliability of a precision investment cast component is a casting quality verification process that is both meticulous and detail oriented. When rigorous and comprehensive metal casting inspection methods are combined with increased metal casting quality standards, part production quality and performance is enhanced. At RH Metals, we employ world class methods in the inspection of casting to create high performance parts and components.Metal Casting Inspection Methods
At RH Metals, we provide the following metal casting quality inspection methods to ensure every part and component we manufacture meets our high level of expectation and our customers receive the finest cast parts and components in the industry.1. Visual Inspections
Our casting quality control experts utilize visual techniques to ensure parts are properly filled with metal (no cracking, tearing, holes or voids, non-fill, etc.). They also meticulously inspect each part, making sure there are no distortions or bends before moving forward in the casting quality process. During the final phase of inspection, parts are inspected and compared to the casting quality control plan and written process instructions. Lastly, the casting quality results are documented and stored for future use by production department staff and process engineers.2. Mechanical Properties Inspections
To confirm the properties of the metal cast part are correct, mechanical testing is performed to approve the metal of the casting. The testing confirms the properties comply per the specified mechanical requirements. The following mechanical properties testing methods are performed to confirm proper casting quality.- Hardness testing - A non-destructive procedure that demonstrates the alloy's machinability and wear resistance.
- Tensile testing - A destructive casting quality test that provides ultimate tensile strength, yield strength, elongation and reduction of the material test specimen.
- Load testing - This test is performed on the entire casting lot to evaluate its casting quality, and to verify that the cast part can carry (deflect) the required or specified structural load when applied. Pressure-containing parts can be hydraulically tested to a proof load or destruction maximum limit.
3. Dimensional Inspections
Our experts utilize Investment Cast Industry Standards as a guide by setting a range of values the casting dimensions can fall within. We also take into consideration critical part dimensions, given to us by the customer, during the planning and inspection phases. We then verify the dimensions of the parts by using micrometers, thread and plug gauges, CMM machine, and other approved functional gauges. The accuracy of these measuring tools adds to the dimensional consistency and casting quality of the manufactured parts.4. Chemical Inspections
RH Metals currently uses x-ray fluorescence (XRF) analysis machine [spectrometer] in its metallurgy lab. Before the metal is poured from the melting pot, a sample of molten metal is poured in to a small "coupon" mold and the casting quality is evaluated in the spectrometer. If needed, minor alloying elements are added to the material to bring the alloy melt into required specification. Then another coupon is tested and certified to ensure proper chemical composition.The chemical composition of every alloy melt is tested and recorded in our database. We then electronically store the records for an indefinite period. This test is performed to ensure the alloy performance properties are to the specification(s) of the customer. Casting alloys are typically specified per ASTM, AMS and SAE alloy specifications. NDT & Other On-Site Metal Casting Inspection Methods
We conduct Non-Destructive Metal Testing (NDT) in-house. The NDT process helps to ensure a casting's quality without destroying it. AMT offers additional services to RH Metal's investment casting on-site, such as testing, inspection, and quality assurance.RH Metal Testing is Certified in the following processes:- Dye (Liquid) Penetrant Testing
- Magnetic Particle Inspection
- Radiographic (X-Ray) Inspection
Non-destructive testing helps to ensure product quality and can be required in some leading industries, including automotive, and aerospace. If you are considering quality testing and other add-on services, contact us for more information on non-destructive metal testing options for your application.Quality Metal Castings by RH Metals
RH Metals offers a wide variety of in-house casting quality control, verification and product testing services (such as NDT) designed to provide our customers with the highest quality cast product. No matter what the intended application, every precision investment cast component is examined, inspected, and approved before leaving our building. Contact us for more information regarding our metal casting inspection methods, and we will gladly answer any questions that you may have. RH Metals is your trusted resource for proven metal casting quality for high performance metal parts.
Address:
Dalian, Liaoning, China
Business Type:
Manufacturer/Factory, Trading Company, Group Corporation
Business Range:
Auto, Motorcycle Parts & Accessories, Construction & Decoration, Consumer Electronics, Health & Medicine, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Tools & Hardware, Transportation
Management System Certification:
ISO 9001, ISO 14001
Company Introduction:
Company was established in 2002 under SYMG The headquarters and factories are located in new China industrial cradle town Shenyang, China. The international biz branch is in the city of Dalian and it is located about 15 kilometers away from the Dalian Port and about 25 kilometers away from the Zhoushuizi International Airport. The foundry is equipped with several types of energy-saving & environmentally-friendly lost wax casting and shell molding casting production lines including automatic or semi-automatic production lines of key processes: Wax making, shell making, pouring, heat treatment. The machining workshop equipped with complete and advanced CNC machining equipment including vertical and horizontal machining centers, CNC machines almost all the equipment are produced by ourself. Other machines including laser and plasma cutting machines, With abundant supply chain management capabilities, in addition to machined precision steel castings, we can also provide customers with precision machined sand casting steel parts, iron castings, forgings, profile machined parts and sheet metal parts. Our company also has a lot of advanced inspection equipment, including Spectrometer, Metallographic Microscope, Tension Tester, Low Temperature Tester, X-ray Tester, MPT, UT, CMM, Video Measurement Machine and so on. With these advanced facilities & instruments, we are able to supply the high quality castings to our customers, and make products meeting comprehensive inspection requirements on chemical composition, mechanical properties, non-destructive testing and high precise dimensional inspections.
Our products cover a wide range of industries including train & railway, automobile & truck, construction machinery, mining machinery, forklift, agricultural machinery, shipbuilding, petroleum machinery, construction, valve and pumps, electric machine, hardware, power fitting and equipment and many industries others. We are capable to produce products according to customers′ drawings or samples, we focus on casting steel, aluminum, ductile iron, malleable iron, gray iron, cooper or bronze and other metals. Up to today, more than 4, 000 kinds of different products have been developed and manufacturing by us. We are familiar with the material standards of many countries, such as Chinese GB, American ASTM, AISI, German DIN, European EN, Japanese JIS, British BS, Australian AS and Association of American Railroads and other industrial standards.
Our company has completed a transformation and upgraded to a deep-processing manufacturer with expanded production capabilities. Our core values are providing our customers with completed solutions, great finished products and excellent customer service, and strives to increase products′ added value for its core competitiveness. We supply end-products to top-end markets for global customer′s well-diversified requirements. By developing a key growth strategy that offers one-stop total solution and services which integrates casting, forging, machining, welding, surface treatment, and assembly in its components manufacturing, the company emerges as a leading metal forming and processing manufacturer that possesses solid comprehensive strength and unique business model. Our clients include many well-known OEM customers who specialize in automobile, rail, construction equipment, material handling equipment, we already have have cooperation with some the world′s Top 500 companies as one of their major precision metal parts suppliers in China.
Advanced Equipments, Excellent QC and QA, and Perfect Services". "Starting from the customer needs and ending with their satisfaction, focusing on customer demands and exceeding their expectations". With the enterprise spirit of "Moving with the times, pioneering and innovating, harmony and win-win, striving for excellence"