Good service custom made cast agricultural machinery parts
Softward: Solidworks, CAD, Procast, UG
Development cycle of samples: 25-35 days
Stainless steel: 304/304L, 316/316L, 410/416 etc
Part weight: 2g to 30kgs
Normalzing, Tempering, Quenching, Annealing, Quenching & Tempering, Caburization, Solution treatment.
Polishing, bead blasting, zinc plating, hot dip galvanized, nickel plating, passivation,
Electro-polising, mirror polishing, Brush polishing, PE coating, Powder coating, etc
Cleanliness inspection, X-Ray radiographic inspection, CMM inspection
More than 120 tons per month
Advantages of Stainless Steel Castings
Stainless steel investment castings are used across a wide range of industry sectors for the following reasons:
- Excellent Corrosion Resistance: Chromium is used as an alloying element in stainless steel which helps improve its anti-corrosive properties. Unlike carbon and alloy steel, stainless steel castings require little or no additional surface finishing. This 1 reason why stainless steel investment cast parts are used in industrial components such as valves, pumps, and other parts where corrosion resistance is critical.
- Exceptional Visual Quality: Grade A visual appearance is possible for investment cast parts that require high visual quality.
- Surface Finishes: 120 RMS or better is easily achieve.
- Close Tolerances: ±.005 inch per inch tolerance levels can be achieved
- Near Net Shape Parts: Avoid long run time machine parts using near net investment cast parts.
- Creating the “pattern”(i.e. a replica) of the part that’s to be cast by injecting wax into a die. This process is also used for die casting. Usually, the pattern is created as 1 piece.
- Compiling potentially several wax patterns into a completed assembly known as a gating system or “tree”. This form allows molten metal to flow into the CZPT cavity at a later stage.
- Immersing the assembly in high-grade ceramic slurry(known as the investment stage).
- Building up an additional coating of coarse ceramic particles up to 10mm thick while the assembly is still wet.
- Melting the wax from the dry CZPT to leave a thin-walled and hollow ceramic shell.
- Firing the moulds to remove any last vestiges of wax and add durability to the final mould. This can necessitate temperatures of 1000°C.
- Pouring molten metal within the still-heated moulds. A heated CZPT is used to instil better dimensional accuracy, with tolerances of as low as .076mm enabled.
- Breaking or cutting the cooled shell mould open to reveal the casting.
- Cutting each pattern off the tree
- Finishing the final part using fettling, grinding, sandblasting, heat treatment and other testing or surface finishing processe.
New wax injection machine set up finished. Max-pressure is 35 tons,wax pattern largest size is 800*600 mm.
It’s the biggest wax injection machine in China.
With the help of this machine,we are CZPT to cast big steel parts for our customers by silical sol investment casting way.
Secondary Operations and Treatment of Investment Castings We Offer
Polished zinc plating, nickel plating, electroplating, Chrome plating
Anodizing, phosphating, acid treatment, polishing
High precision CNC machining
Broaching, milling, drilling, tapping
Surface grinding, sand blasting, powder coating
Q1: What is our payment term?
Q2: How can we quote for you?
A: Please email us enquiry with all technical drawings you have, such as material grade, tolerance, mechanical
properties, heat treatment, requirements, etc. Our specialized engineers will check and quote for you within 24 hours.
Q3: Which product are often processed by your company ?
A: Auto parts,machinery part, marine part, Kitchen parts, Agricultural parts.
Q4: Which material are often used ?
A: Stainless steel. alloy steel, carbon steel, aluminum, copper.
Q5: Which finish you can provide ?
A:Sand blasting, Tumbling, Polishinh, Electro-polishing, Mirror Polishing, Powder coating, Electrophoresis, ETC.
Q6: What is the MOQ ?
A: Based on the product, normal 100 pcs.
Q7: Can we make the samples?
A: Is Available, 15-20days for sampling.
Q8: How about for the lead time?
A: Normally about 35 days for mass production, pls inform us if it is urgent order.
Lead Screws and Clamp Style Collars
If you have a lead screw, you’re probably interested in learning about the Acme thread on this type of shaft. You might also be interested in finding out about the Clamp style collars and Ball screw nut. But before you buy a new screw, make sure you understand what the terminology means. Here are some examples of screw shafts:
The standard ACME thread on a screw shaft is made of a metal that is resistant to corrosion and wear. It is used in a variety of applications. An Acme thread is available in a variety of sizes and styles. General purpose Acme threads are not designed to handle external radial loads and are supported by a shaft bearing and linear guide. Their design is intended to minimize the risk of flank wedging, which can cause friction forces and wear. The Centralizing Acme thread standard caters to applications without radial support and allows the thread to come into contact before its flanks are exposed to radial loads.
The ACME thread was first developed in 1894 for machine tools. While the acme lead screw is still the most popular screw in the US, European machines use the Trapezoidal Thread (Metric Acme). The acme thread is a stronger and more resilient alternative to square threads. It is also easier to cut than square threads and can be cut by using a single-point threading die.
Similarly to the internal threads, the metric versions of Acme are similar to their American counterparts. The only difference is that the metric threads are generally wider and are used more frequently in industrial settings. However, the metric-based screw threads are more common than their American counterparts worldwide. In addition, the Acme thread on screw shafts is used most often on external gears. But there is still a small minority of screw shafts that are made with a metric thread.
ACME screws provide a variety of advantages to users, including self-lubrication and reduced wear and tear. They are also ideal for vertical applications, where a reduced frictional force is required. In addition, ACME screws are highly resistant to back-drive and minimize the risk of backlash. Furthermore, they can be easily checked with readily available thread gauges. So, if you’re looking for a quality ACME screw for your next industrial project, look no further than ACME.
Lead screw coatings
The properties of lead screw materials affect their efficiency. These materials have high anti-corrosion, thermal resistance, and self-lubrication properties, which eliminates the need for lubrication. These coating materials include polytetrafluoroethylene (PFE), polyether ether ketone (PEK), and Vespel. Other desirable properties include high tensile strength, corrosion resistance, and rigidity.
The most common materials for lead screws are carbon steel, stainless steel, and aluminum. Lead screw coatings can be PTFE-based to withstand harsh environments and remove oil and grease. In addition to preventing corrosion, lead screw coatings improve the life of polymer parts. Lead screw assembly manufacturers offer a variety of customization options for their lead screw, including custom-molded nuts, thread forms, and nut bodies.
Lead screws are typically measured in rpm, or revolutions per minute. The PV curve represents the inverse relationship between contact surface pressure and sliding velocity. This value is affected by the material used in the construction of the screw, lubrication conditions, and end fixity. The critical speed of lead screws is determined by their length and minor diameter. End fixity refers to the support for the screw and affects its rigidity and critical speed.
The primary purpose of lead screws is to enable smooth movement. To achieve this, lead screws are usually preloaded with axial load, enabling consistent contact between a screw’s filets and nuts. Lead screws are often used in linear motion control systems and feature a large area of sliding contact between male and female threads. Lead screws can be manually operated or mortised and are available in a variety of sizes and materials. The materials used for lead screws include stainless steel and bronze, which are often protected by a PTFE type coating.
These screws are made of various materials, including stainless steel, bronze, and various plastics. They are also made to meet specific requirements for environmental conditions. In addition to lead screws, they can be made of stainless steel, aluminum, and carbon steel. Surface coatings can improve the screw’s corrosion resistance, while making it more wear resistant in tough environments. A screw that is coated with PTFE will maintain its anti-corrosion properties even in tough environments.
Clamp style collars
The screw shaft clamp style collar is a basic machine component, which is attached to the shaft via multiple screws. These collars act as mechanical stops, load bearing faces, or load transfer points. Their simple design makes them easy to install. This article will discuss the pros and cons of this style of collar. Let’s look at what you need to know before choosing a screw shaft clamp style collar. Here are some things to keep in mind.
Clamp-style shaft collars are a versatile mounting option for shafts. They have a recessed screw that fully engages the thread for secure locking. Screw shaft clamp collars come in different styles and can be used in both drive and power transmission applications. Listed below are the main differences between these 2 styles of collars. They are compatible with all types of shafts and are able to handle axial loads of up to 5500 pounds.
Clamp-style shaft collars are designed to prevent the screw from accidentally damaging the shaft when tightened. They can be tightened with a set screw to counteract the initial clamping force and prevent the shaft from coming loose. However, when tightening the screw, you should use a torque wrench. Using a set screw to tighten a screw shaft collar can cause it to warp and reduce the surface area that contacts the shaft.
Another key advantage to Clamp-style shaft collars is that they are easy to install. Clamp-style collars are available in one-piece and two-piece designs. These collars lock around the shaft and are easy to remove and install. They are ideal for virtually any shaft and can be installed without removing any components. This type of collar is also recommended for those who work on machines with sensitive components. However, be aware that the higher the OD, the more difficult it is to install and remove the collar.
Screw shaft clamp style collars are usually one-piece. A two-piece collar is easier to install than a one-piece one. The two-piece collars provide a more effective clamping force, as they use the full seating torque. Two-piece collars have the added benefit of being easy to install because they require no tools to install. You can disassemble one-piece collars before installing a two-piece collar.
Ball screw nut
The proper installation of a ball screw nut requires that the nut be installed on the center of the screw shaft. The return tubes of the ball nut must be oriented upward so that the ball nut will not overtravel. The adjusting nut must be tightened against a spacer or spring washer, then the nut is placed on the screw shaft. The nut should be rotated several times in both directions to ensure that it is centered.
Ball screw nuts are typically manufactured with a wide range of preloads. Large preloads are used to increase the rigidity of a ball screw assembly and prevent backlash, the lost motion caused by a clearance between the ball and nut. Using a large amount of preload can lead to excessive heat generation. The most common preload for ball screw nuts is 1 to 3%. This is usually more than enough to prevent backlash, but a higher preload will increase torque requirements.
The diameter of a ball screw is measured from its center, called the ball circle diameter. This diameter represents the distance a ball will travel during 1 rotation of the screw shaft. A smaller diameter means that there are fewer balls to carry the load. Larger leads mean longer travels per revolution and higher speeds. However, this type of screw cannot carry a greater load capacity. Increasing the length of the ball nut is not practical, due to manufacturing constraints.
The most important component of a ball screw is a ball bearing. This prevents excessive friction between the ball and the nut, which is common in lead-screw and nut combinations. Some ball screws feature preloaded balls, which avoid “wiggle” between the nut and the ball. This is particularly desirable in applications with rapidly changing loads. When this is not possible, the ball screw will experience significant backlash.
A ball screw nut can be either single or multiple circuits. Single or multiple-circuit ball nuts can be configured with 1 or 2 independent closed paths. Multi-circuit ball nuts have 2 or more circuits, making them more suitable for heavier loads. Depending on the application, a ball screw nut can be used for small clearance assemblies and compact sizes. In some cases, end caps and deflectors may be used to feed the balls back to their original position.