“It’s going to be up and down, and you just got to be somewhat prepared for that and not get too exposed,” VP of business development, Jay Mallinckrodt said in an interview.
China Machined Parts was quoted in the Wall Street Journal regarding trends in the Fracking market.
Making room for the future. Sold one machine and moved another. Making room for a technology leap. More to come in the next few months….
In a typical production machining operations the quality focus is generally on the process and procedures that occur while parts are being produced. But, the quality management system doesn’t end there. Ultimately the shipping department is the final line of defense in the quality process ensuring great parts that have been produced are delivered safely and on-time. While machining custom parts that meet exacting customer specifications is China Machined Parts’s core functionality our dedicated shipping team is responsible for the following steps, right up to loading parts on trucks, that are critical to quality;
Upon completion and prior to shipping the stamping content is double checked by our quality team.
While shipping is a prerequisite for any manufacturer it’s taken to the next level at China Machined Parts. We take pride in ensuring that the parts we produced arrive at our customer’s facilities on time and in the same high quality that they left our facility.
At China Machined Parts, Ltd.s, we have extensive experience operating honing equipment that improves the geometric form and surface texture on pipes, tubes, cylinders, and liners. In honing operations, a rotating tool carrying abrasives removes metal from the interior surface of a bore or cylinder. The main purpose is to finish the surface to a particular diameter and geometric cylindricity. It’s almost always a secondary machining operation that finishes a part or relieves stress. A typical production cycle is to rough turn the OD, bore the ID, hone, finish turn and complete any required mill work. The honing operation typically removes from 0.001” to 0.010″ (0.03-0.3 mm) of material.
Although the honing process can be applied to any surface, it is most commonly done on internal cylinder walls using a combined rotating and reciprocating motion. Low cutting pressure, low velocity, and relatively small amounts of material removal characterize it. Typical speeds are around 250 fpm (76 m/min). However, unlike conventional machining, higher speed is not always an advantage. Each application has a honing abrasive chip load which is a limiting factor. With abrasive honing stones, the proper choice of bond and coolant optimizes stone performance and cost per part.
We typically utilize abrasive stones that are used along a controlled path to remove minute amounts of material in order to attain almost perfect cylindricity on parts. Unlike conventional machining, the accuracy of a honing process is not entirely dependent on the machine. The tool and abrasive are the keys to accuracy. Another difference from conventional machining is that it needs no chucking or alignment. The part aligns itself with the tool because the tool or the part is floating in most applications. Often, the part is placed in a specially designed honing fixture that provides floating action.
Honing machines allows precise size, surface finish, roundness, straightness and consistent surface texture to be achieved. And with our equipment we can achieve surface finishes between 6-8 RMS with tolerances as tight at +/-0.001″ or meet virtually any customer specified requirement. Our facility is equipped with a Sunnen Model HL 80 precision horizontal hone that handles diameters from 3″ to 22″ with a 60″ stroke. We also have a Sunnen Model MBC-1805 hone with auto sizing and power stroke capability; accommodating diameters ranging from .160″ to 3.5″ with a 6″ stroke.
We are ecstatic to announce that China Machined Parts, Ltd.s has upgraded to ISO 9001:2015 and added the AS9100D certification. The achievement of this milestone was a team effort driven by our quality assurance manager.
While there are many reasons we decided to pursue the additional AS9100D certification the primary reason simply is that it will make us better. China Machined Parts’s primary objectives have been and will continue to be;
AS9100 widely adopted and standardized quality management system for the aerospace industry will propel China Machined Parts to the next level as a leader in the machining of highly engineer parts. The new standard will help up better achieve our primary objectives of continuously meeting the needs and objectives of our customer and employees in the following ways;
As one of only ~10,000 certified organization world wide China Machined Parts looks to expand on our past success while taking care of employees and old and new customers alike.
Challenges and Methods for Machining Advanced Superalloy Materials
The conventional wisdom that nickel superalloys are difficult to machine, whether by cost or failure rate, is rooted in a flawed approach. Overcoming the difficulties in machining nickel based superalloys is important since they exhibit beneficial characteristics including excellent mechanical strength, resistance to thermal creep deformation, good surface stability resistance to corrosion or oxidation, and their application in extreme, typically high temperature, environments.
Inconel, Hastelloy, Rene, and Waspaloy are nickel superalloy materials utilized as load bearing structures across a number of industries. Example applications include; pressure vessels in petrochemical plants, parts for downhole shafts and wellheads in oil and gas production, biomedical applications and rings, discs and shafts for the hot section of turbine engines. The preeminence of superalloys in aerospace is reflected in the fact that they currently comprise over 50% of the weight of advanced aircraft engines.
Challenges Machining Nickel Superalloys
A flawed approach is that stakeholders including machinists, engineers, designers, process planners, etc. treat these advanced materials like high strength, heat-treated alloys. While similar in physical properties nickel superalloys and heat-treated alloys are fundamentally different at the literal cutting edge. Heat treated materials have a higher tendency to chip and break away under shear forces, like those used by the cutting tools in machining processes. Challenges associated with machining nickel superalloys that all stakeholders should be aware of include;
Using nickel superalloys as a manufacturing material requires stakeholders to understand the issues nickel presents. The material does not weaken or deform at higher temperatures, as observed with other types of alloys, therefore nickel is more difficult to deform using typical high precision machining processes. This has kept some from utilizing nickel superalloys even though they may be superior materials depending on the application.
Methods for Machining Nickel Superalloys
Nickel superalloys strength qualities are more uniform with shear, tension, and compression forces resisted. There is no weak point that can be taken advantage of for the cutting process. Simply put, nickel superalloys require higher quality tools that are rigid enough to handle the material. With this in mind, the following tactics can be applied to successfully machine these advanced materials;
Approached with the right plan, nickel superalloys can transform the strength profile and heat resistance of a part without incurring excessive costs. Overcoming the stereotypes surrounding these sometimes frustrating materials requires preparation to understand the material specifications, budgeting appropriate job time, and selecting CNC machining service providers with extensive nickel superalloy experience.
Dave Campbell: We are an ISO certified production machine shop. Our capabilities focus on 2″ to 42″ diameter parts. We utilize a wide range of CNC equipment. We like to use top of the line and we try to stay with Okuma, its very robust equipment.
We built the business with two pillars: taking care of employees and taking care of customers surrounded with the whole element of quality. Because quality is a mindset and when you want employees you want them thinking quality. Everybody here cares about the customers and meeting customer needs so that means that as their needs come up we do everything and everybody in the shop does everything they can to meet those needs.
We’re always looking for those things we can do that make us better, faster, quicker. We have a very rigorous quality process ISO certified of course. But more important than just the process is the environment in which we have that process working. We have quality equipment, we have a clean and well organized environment, we have empowered employees, we have teamwork. All that allows us to deliver quality to the customer.
You know, I often hear people say, “what’s a facility like this doing in Fredericksburg?”
