Product Description
Steel Agricultural Part by Investment Casting
1.Company Profile:
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Specializing in the manufacturing of lost wax investment castings and finished products in carbon steel and alloy steel, our company is a world class manufacturer and supplier of investment castings in China. It consists of 2 major facilities, both steel casting foundry and CNC machining factory which enable us to supply both precision castings and finished products with an annual production capacity of over 20,000 tons, and the products are mainly exported to Europe, America, Japan and other destinations around the world. The headquarters of our company is located in the famous industrial town Xihu (West Lake) Dis., HangZhou in China. It is very convenient to be reached with an advantageous geographic position; it is located about 30 kilometers away from the Bei-lun Port which is the second biggest port in China, and about 15 kilometers away from the Lishe International Airport. The principal production base of the cast steel foundry is located in Qiucun Town, Xihu (West Lake) Dis., HangZhou, a distance of 15 kilometers away from the Headquarters. Our company was established in 1992, it covers a total area of 40,500 square meters and now has more than 500 employees, including 10 engineers and 60 technicians. The company owns a brand-new foundry, which covers an area of more than 30,000 square meters. 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 equipment and so on. We are capable to produce products according to customers' drawings or samples, we focus on both carbon steel and alloy steel. Up to today, more than 100 raw materials and 5,000 kinds of different products have been developed and produced by us. We are familiar with the various industrial standards, such as Chinese GB, American ASTM, AISI , German DIN, French NF, Japanese JIS, British BS, Australian AS and Association of American Railroads (AAR ) and other industrial standards. |
2. Our Mission:
Create the Best Value for Customers,Contribute for Equipment Manufacturing in the World.
3. Our Values:
- Moving with the Times
- Pioneering and Innovation
- Harmony and Win-Win
- Striving for Excellence
4.Xihu (West Lake) Dis.n Resources:
Working Style: Sincere pragmatic , Persistent effort , Teamwork , Struggle&Transcend
Employee Image: Elegant style, Polite and courteous, Warmly and humble, Be neither Arrogance nor Inferiority, Preciseness and Professional.
| Xihu (West Lake) Dis.n resources | |
| Casting Engineers | 3 |
| Material Engineers | 1 |
| Heat Treatment Engineers1 | 1 |
| Machining Engineers12 | 5 |
| Professional Technician | 12 |
| QA | 28 |
| Production Managers | 55 |
| Sales &Customer Service Staffs18 | 18 |
| Direct Labor | 390 |
| Total :513 | |
5.Annual Turnover:
Expected Target : Up to 2571, annual turnover exceeds 60 million dollars
| Annual turnover(Unit: Million Dollars) | |
| 2005 | $ 7.4m |
| 2006 | $ 9.0m |
| 2007 | $ 12.6m |
| 2008 | $ 16.0m |
| 2009 | $ 10.7m |
| 2571 | $ 15.5m |
| 2011 | $ 18.4m |
| 2012 | $ 17.6m |
| 2013 | $ 26.9m |
| 2014 | $ 32.6m |
| 2015 | $ 34.1m |
| 2016 | $ 36.6m |
6.Product Descripition:
| Description | Investment casting |
| Material | Carbon steel, alloy steel, stainless steel |
| Process | Lost wax casting + cnc machining |
| Casting dimension tolerance | CT7 |
| Casting surface roughness | Ra 12.5um |
| Casting weight range | 0.1-90kg |
| Size | Max linear size: 1200mm, Max diameter size: 600mm |
| Machining Precision | Positioning accuracy 0.008mm, Rep. position. accuracy 0.006mm |
| Machining surface roughness | Ra0.8~6.3um |
| Max Machining Travel Of Spindle | 1900mmx850mmx700mm |
| Max Machining Turning Diameter | 830mm |
| Material standard | GB, ASTM, AISI, DIN, BS, JIS, NF, AS, AAR....... |
| Surface treatment | KTL(E-coating), Zinc plating, Mirror Polishing, Sand Blasting, Acid pickling, black oxide, Painting, Hot galvanizing,Powder coating, Nickel plating |
| Service available | OEM & ODM |
| Quality control | 0 defects,100% inspection before packing |
| Application |
Train & railway, automobile& truck, construction machinery, forklift, agricultural machinery, shipbuilding, petroleum machinery, construction, valve and pumps, electric machine, hardware, power equipment and so on. |
7.Product Profile:
| 1. Marterial percentage |
alloy steel:45% |
| 2. Casting weight percentage |
0.1-5kg:40% |
| 3. Industry percentage |
Components for train & railway: 25% |
| 4. Globa market share |
United States:30% |
| 5. Production capacity |
Production Capacity: 25,000 tons / year |
8. Manufacturing Process:
Process design⇒ Tooling making ⇒ Wax injection ⇒Wax pattern assembly⇒ Mold preheat ⇒ Wax removal ⇒Stuccoing ⇒Dipping Casting⇒ Mold shake out ⇒Work piece cut-off ⇒ Grinding ⇒ Pack& transport ⇒ Final inspection ⇒Machining ⇒ Heat treatment
9.Major Machining Equipment List:
| Machining Capabilities | |
| Three-Axis turning centre | 1 set |
| Four-Axis Horizontal Machine Center | 1 set |
| Vertical Lifting Milling Machine | 4 sets |
| Plane Milling Machine | 2 sets |
| CNC Lathe Machine | 27 sets |
| Engine Lathe Machine | 6 sets |
| Radial Drilling Machine | 4 sets |
| CNC Drilling Machine | 5 sets |
| Four-Axis Vertical Machine Center | 21 sets |
| CNC Milling Machine | 6 sets |
| Universal Milling Machine | 2 sets |
| Fase Milling Machine | 3 sets |
| Oblique Xihu (West Lake) Dis. CNC Lathe Machine | 2 sets |
| Special Lathe | 5 sets |
| Porous Drilling Machine | 1 set |
| Cylindrical Drilling Machine | 11 sets |
10. Key Testing Equipments:
| 1.Direct-Reading Spectrometer | 12.3D Scanner |
| 2.Non-contact infrared thermometer | 13.Coordinate Measuring Machine |
| 3.Metallographic Microscope | 14.Surface Roughness Tester |
| 4.Tension Tester | 15.Ultrasonic Testing Machine(HS600) |
| 5.Low Temperature Chamber For Impact Specimen | 16.Coating thickness gauge |
| 6.Impact Test Machine | 17.Portable Magnetic Particle Tester |
| 7.Magnetic Particle Testing Machine | 18.Portable Hardness Tester |
| 8.Ultrasonic Testing Machine | 19.Hardness Test Machine |
| 9.X-ray tester | 20.Rockwell Hardness Test Machine |
| 10.Surface Roughness Tester | 21.Contact infrared thermometer |
| 11.Video Measurement Machine |
11.We provide various test facilities as mentioned under:
| 1. Chemical analysis |
| 2. Tensile strength |
| 3. Elongation rate |
| 4. Shrinkage rate |
| 5. Impact test |
| 6. Harness test |
| 7. Metallography |
| 8. Non-destructive tests(including dye-penetrant, ultrasonic, magnetic particle and radiography) |
| 9. Surface roughness test |
| 10. CMM test |
12.APQP and Inspection Report:
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APQP-Casting
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APQP-Machining
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Inspection Report-Casting
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Inspection Report-Machining
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Other Quality Document
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13.Core Competition Advantages:
Advantages 1:High Engineering and Technical Capability
- An industry's top engineering technical team , with special skills and rich experience in product design, casting ,heat treating and machining fields.
- Special Techniques Enable XIHU (WEST LAKE) DIS.NG to Be Competent with Those Difficulties at Wax Injection & Shell Making Procedures When Manufacturing the Parts with Inner-Sophisticated-Structures
- Based on customer needs, in the beginning of product development, offer a solution, casting design, by structural component designed to casting parts, optimize the product design, then reduce costs and creating the best value for the customers.
- Use casting simulation analysis system software 100% to ensure the success of the one-time trial sample
Advantages 2: Advanced Inspection Equipment & Strong Quality Assurance Capacity
- Our testing equipments are not only leading in the industry, and also has a very complete range, they are hardware guarantee to ensure us continue to provide high-quality products for our customers .
- IQC, IPQC and FQC quality management team to control the whole production process, effectively prevent the generation of unqualified product.
- Our casting' PPM ≤1000 Machining ' PPM ≤600
- Carrying out ISO9001 and TS16949 quality management system, full implementation of 6S and Kanban site management, which is software guarantee of the quality.
- We sticks to the quality management philosophy that "Starting from the customer needs and ending with their satisfaction, focusing on customer demands and exceeding their expectations".
Advantages3: Good Customer Service
- XIHU (WEST LAKE) DIS.NG can provide customers with good service, our staff have abundant commercial experience, good language ability, and rich foundry or mechanical background. We are committed to providing customers with accurate, careful and speedy service.
- Quotation, Quality Complaints and Email Response get fast effective feedback within 48 hours.
- We have carried out an information-based management which is driven by an ERP and PMC system, to ensure on time delivery rate: 95%
Advantages 4: Powerful Deep-processing Ability
It is the best core competitive advantage different with others in the industry
- Machining capability as the same as casting, the machining facility is fully independent from the casting foundry and has an independent management team and tailored business model to suit.
- High technical content in machining, and casting with sheet metal, welding, assembling, XIHU (WEST LAKE) DIS.NG has the most competitive advantage, it is the best choice for you.
- XIHU (WEST LAKE) DIS.NG has completed a transformation and upgraded to a deep-processing manufacturer with expanded production capabilities and is committed to be equipped with other capabilities except casting, we focus on developing terminal products for top-end markets.
14. Contact Information:
Spiral Gears for Right-Angle Right-Hand Drives
Spiral gears are used in mechanical systems to transmit torque. The bevel gear is a particular type of spiral gear. It is made up of 2 gears that mesh with 1 another. Both gears are connected by a bearing. The 2 gears must be in mesh alignment so that the negative thrust will push them together. If axial play occurs in the bearing, the mesh will have no backlash. Moreover, the design of the spiral gear is based on geometrical tooth forms.
Equations for spiral gear
The theory of divergence requires that the pitch cone radii of the pinion and gear be skewed in different directions. This is done by increasing the slope of the convex surface of the gear's tooth and decreasing the slope of the concave surface of the pinion's tooth. The pinion is a ring-shaped wheel with a central bore and a plurality of transverse axes that are offset from the axis of the spiral teeth.
Spiral bevel gears have a helical tooth flank. The spiral is consistent with the cutter curve. The spiral angle b is equal to the pitch cone's genatrix element. The mean spiral angle bm is the angle between the genatrix element and the tooth flank. The equations in Table 2 are specific for the Spread Blade and Single Side gears from Gleason.
The tooth flank equation of a logarithmic spiral bevel gear is derived using the formation mechanism of the tooth flanks. The tangential contact force and the normal pressure angle of the logarithmic spiral bevel gear were found to be about 20 degrees and 35 degrees respectively. These 2 types of motion equations were used to solve the problems that arise in determining the transmission stationary. While the theory of logarithmic spiral bevel gear meshing is still in its infancy, it does provide a good starting point for understanding how it works.
This geometry has many different solutions. However, the main 2 are defined by the root angle of the gear and pinion and the diameter of the spiral gear. The latter is a difficult 1 to constrain. A 3D sketch of a bevel gear tooth is used as a reference. The radii of the tooth space profile are defined by end point constraints placed on the bottom corners of the tooth space. Then, the radii of the gear tooth are determined by the angle.
The cone distance Am of a spiral gear is also known as the tooth geometry. The cone distance should correlate with the various sections of the cutter path. The cone distance range Am must be able to correlate with the pressure angle of the flanks. The base radii of a bevel gear need not be defined, but this geometry should be considered if the bevel gear does not have a hypoid offset. When developing the tooth geometry of a spiral bevel gear, the first step is to convert the terminology to pinion instead of gear.
The normal system is more convenient for manufacturing helical gears. In addition, the helical gears must be the same helix angle. The opposite hand helical gears must mesh with each other. Likewise, the profile-shifted screw gears need more complex meshing. This gear pair can be manufactured in a similar way to a spur gear. Further, the calculations for the meshing of helical gears are presented in Table 7-1.
Design of spiral bevel gears
A proposed design of spiral bevel gears utilizes a function-to-form mapping method to determine the tooth surface geometry. This solid model is then tested with a surface deviation method to determine whether it is accurate. Compared to other right-angle gear types, spiral bevel gears are more efficient and compact. CZPT Gear Company gears comply with AGMA standards. A higher quality spiral bevel gear set achieves 99% efficiency.
A geometric meshing pair based on geometric elements is proposed and analyzed for spiral bevel gears. This approach can provide high contact strength and is insensitive to shaft angle misalignment. Geometric elements of spiral bevel gears are modeled and discussed. Contact patterns are investigated, as well as the effect of misalignment on the load capacity. In addition, a prototype of the design is fabricated and rolling tests are conducted to verify its accuracy.
The 3 basic elements of a spiral bevel gear are the pinion-gear pair, the input and output shafts, and the auxiliary flank. The input and output shafts are in torsion, the pinion-gear pair is in torsional rigidity, and the system elasticity is small. These factors make spiral bevel gears ideal for meshing impact. To improve meshing impact, a mathematical model is developed using the tool parameters and initial machine settings.
In recent years, several advances in manufacturing technology have been made to produce high-performance spiral bevel gears. Researchers such as Ding et al. optimized the machine settings and cutter blade profiles to eliminate tooth edge contact, and the result was an accurate and large spiral bevel gear. In fact, this process is still used today for the manufacturing of spiral bevel gears. If you are interested in this technology, you should read on!
The design of spiral bevel gears is complex and intricate, requiring the skills of expert machinists. Spiral bevel gears are the state of the art for transferring power from 1 system to another. Although spiral bevel gears were once difficult to manufacture, they are now common and widely used in many applications. In fact, spiral bevel gears are the gold standard for right-angle power transfer.While conventional bevel gear machinery can be used to manufacture spiral bevel gears, it is very complex to produce double bevel gears. The double spiral bevel gearset is not machinable with traditional bevel gear machinery. Consequently, novel manufacturing methods have been developed. An additive manufacturing method was used to create a prototype for a double spiral bevel gearset, and the manufacture of a multi-axis CNC machine center will follow.
Spiral bevel gears are critical components of helicopters and aerospace power plants. Their durability, endurance, and meshing performance are crucial for safety. Many researchers have turned to spiral bevel gears to address these issues. One challenge is to reduce noise, improve the transmission efficiency, and increase their endurance. For this reason, spiral bevel gears can be smaller in diameter than straight bevel gears. If you are interested in spiral bevel gears, check out this article.
Limitations to geometrically obtained tooth forms
The geometrically obtained tooth forms of a spiral gear can be calculated from a nonlinear programming problem. The tooth approach Z is the linear displacement error along the contact normal. It can be calculated using the formula given in Eq. (23) with a few additional parameters. However, the result is not accurate for small loads because the signal-to-noise ratio of the strain signal is small.
Geometrically obtained tooth forms can lead to line and point contact tooth forms. However, they have their limits when the tooth bodies invade the geometrically obtained tooth form. This is called interference of tooth profiles. While this limit can be overcome by several other methods, the geometrically obtained tooth forms are limited by the mesh and strength of the teeth. They can only be used when the meshing of the gear is adequate and the relative motion is sufficient.
During the tooth profile measurement, the relative position between the gear and the LTS will constantly change. The sensor mounting surface should be parallel to the rotational axis. The actual orientation of the sensor may differ from this ideal. This may be due to geometrical tolerances of the gear shaft support and the platform. However, this effect is minimal and is not a serious problem. So, it is possible to obtain the geometrically obtained tooth forms of spiral gear without undergoing expensive experimental procedures.
The measurement process of geometrically obtained tooth forms of a spiral gear is based on an ideal involute profile generated from the optical measurements of 1 end of the gear. This profile is assumed to be almost perfect based on the general orientation of the LTS and the rotation axis. There are small deviations in the pitch and yaw angles. Lower and upper bounds are determined as - 10 and -10 degrees respectively.
The tooth forms of a spiral gear are derived from replacement spur toothing. However, the tooth shape of a spiral gear is still subject to various limitations. In addition to the tooth shape, the pitch diameter also affects the angular backlash. The values of these 2 parameters vary for each gear in a mesh. They are related by the transmission ratio. Once this is understood, it is possible to create a gear with a corresponding tooth shape.
As the length and transverse base pitch of a spiral gear are the same, the helix angle of each profile is equal. This is crucial for engagement. An imperfect base pitch results in an uneven load sharing between the gear teeth, which leads to higher than nominal loads in some teeth. This leads to amplitude modulated vibrations and noise. In addition, the boundary point of the root fillet and involute could be reduced or eliminate contact before the tip diameter.
