Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An injection process and piston technology, which is applied in the field of injection process to optimize the piston lip, can solve the problems of easy leakage of the piston and small lip size, etc., and achieve the goal of improving quality stability, reducing flow marks, and improving quality and hardness Effect
Active Publication Date: 2021-04-13
勃乐氏密封系统(太仓)有限公司
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] However, there are still some deficiencies in the existing piston processing technology, especially for the piston with a lip, it is extremely easy to have a small lip size during demoulding, which leads to the leakage of the piston during actual use.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0029] Embodiment: a kind of optimized injection process of piston lip, as figure 1 shown, including the following steps:
[0030] (1) Piston composition optimization: including the following components by mass: 2.0-3.5 parts of carbon, 0.4-0.7 parts of manganese, 0.1-0.8 parts of magnesium, 0.01-0.03 parts of sulfur, 0.01-0.04 parts of lead, and 4 parts of fly ash -8 parts, 8-11 parts of phenol formaldehyde resin, 5-10 parts of paraffin, 1-3 parts of plasticizer DOP, 5-7 parts of anti-scorch agent CTP, 0.5-3 parts of glyceryl stearate and RD1-3 parts of anti-aging agent parts; the mass-number ratio of the carbon, manganese, magnesium, sulfur and lead is 100-120:20-30:6-10:1:1; the mass of the carbon, manganese, magnesium, sulfur and lead five The mass fraction ratio of the sum of the parts to the phenol-formaldehyde resin is 1:2-4; the sum of the mass fractions of the plasticizer, anti-scorch agent and anti-aging agent accounts for 1:3-4 of the total parts of the raw materia...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
particle size
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses an optimized injection process for a piston lip, which comprises the following steps: (1) piston composition optimization; (2) raw material inspection; (3) incoming material storage; (4) metal material phosphating: manganese in the raw material , magnesium and lead are refined separately, and then added to the phosphating solution according to the proportion and soaked for 20±3min; (5) Injection and holding pressure: the plasticizing temperature is 60°C; the temperature of the injection cylinder is 70°C, and the injection pressure is 120°C ‑130bar; holding pressure is 150‑190bar, holding time is 3‑7s; thimble ejection position is 310‑330mm, thimble ejection speed is 150‑190mm / s; The time is 90s; (6) cooling; (7) trimming; (8) two-stage vulcanization, 185 ° C for 3 hours; (9) airtight test; (10) final inspection, packaging and storage of finished products. The invention can ensure that the product continues to maintain its shape in the mold cavity during the demoulding process, improves the stability of the lip size, and further improves the sealing performance of the piston.
Description
technical field [0001] The invention belongs to the technical field of seal processing, in particular to an injection process for optimizing piston lip. Background technique [0002] As people pay more and more attention to environmental issues, the requirements for the performance of internal combustion engines are also increasing: high power, low fuel consumption, low noise, low emissions, etc. As the piston is an important core component of the internal combustion engine, the quality of its performance becomes particularly important. [0003] Chinese patent CN 108176956 A discloses "a piston processing technology", which includes the following steps: a, material cutting; b, stretching; c, flat bottom; d, pre-bending; e, flat head; f, car end face; g , rolling groove; h, turning, turning the outer circle of the blank; l, rough grinding of the outer circle, rough machining of the outer circle by the grinding machine; j, semi-finishing; k, fine grinding; l, degreasing; m, h...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more