100 Continue
The requestor should continue with the request. The server returns this code to indicate that it has received the first part of a request and is waiting for the rest.
101 Switching Protocols
This means the requester has asked the server to switch protocols and the server is acknowledging that it will do so
102 Processing
As a WebDAV request may contain many sub-requests involving file operations, it may take a long time to complete the request. This code indicates that the server has received and is processing the request, but no response is available yet. This prevents the client from timing out and assuming the request was lost.
200 OK
Standard response for successful HTTP requests. The actual response will depend on the request method used. In a GET request, the response will contain an entity corresponding to the requested resource. In a POST request the response will contain an entity describing or containing the result of the action.
201 Created
The request has been fulfilled and resulted in a new resource being created.
202 Accepted
The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon, as it might be disallowed when processing actually takes place.
203 Non-Authoritative Information (since HTTP/1.1)
The server successfully processed the request, but is returning information that may be from another source.
204 No Content
The server successfully processed the request, but is not returning any content.
205 Reset Content
The server successfully processed the request, but is not returning any content. Unlike a 204 response, this response requires that the requester reset the document view.
206 Partial Content
The server is delivering only part of the resource due to a range header sent by the client. This is used by tools like wget to enable resuming of interrupted downloads, or split a download into multiple simultaneous streams.
207 Multi-Status (WebDAV) (RFC 2518 )
The message body that follows is an XML message and can contain a number of separate response codes, depending on how many sub-requests were made.
300 Multiple Choices
Indicates multiple options for the resource that the client may follow. It, for instance, could be used to present different format options for video, list files with different extensions, or word sense disambiguation.
301 Moved Permanently
This and all future requests should be directed to the given URI.
302 Found
This is the most popular redirect code, but also an example of industrial practice contradicting the standard. HTTP/1.0 specification (RFC 1945 ) required the client to perform a temporary redirect (the original describing phrase was "Moved Temporarily"), but popular browsers implemented it as a 303 See Other. Therefore, HTTP/1.1 added status codes 303 and 307 to distinguish between the two behaviors. However, the majority of Web applications and frameworks still use the 302 status code as if it were the 303.
303 See Other (since HTTP/1.1)
The response to the request can be found under another URI using a GET method. When received in response to a PUT, it should be assumed that the server has received the data and the redirect should be issued with a separate GET message.
304 Not Modified
Indicates the resource has not been modified since last requested. Typically, the HTTP client provides a header like the If-Modified
Since header to provide a time against which to compare. Utilizing this saves bandwidth and reprocessing on both the server and client, as only the header data must be sent and received in comparison to the entirety of the page being re-processed by the server, then resent using more bandwidth of the server and client.
305 Use Proxy
The requestor can only access the requested page using a proxy. When the server returns this response, it also indicates the proxy that the requestor should use.
306 Switch Proxy
No longer used.
307 Temporary Redirect (since HTTP/1.1)
In this occasion, the request should be repeated with another URI, but future requests can still use the original URI. In contrast to 303, the request method should not be changed when reissuing the original request. For instance, a POST request must be repeated using another POST request.
400 Bad Request
The request contains bad syntax or cannot be fulfilled. The server didn't understand the syntax of the request.
401 Unauthorized
Similar to 403 Forbidden, but specifically for use when authentication is possible but has failed or not yet been provided. The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource. The request requires authentication. The server might return this response for a page behind a login.
402 Payment Required
The original intention was that this code might be used as part of some form of digital cash or micropayment scheme, but that has not happened, and this code has never been used.
403 Forbidden
The request was a legal request, but the server is refusing to respond to it. Unlike a 401 Unauthorized response, authenticating will make no difference.
404 Not Found
The server can't find the requested page. For instance, the server often returns this code if the request is for a page that doesn't exist on the server. The requested resource could not be found but may be available again in the future. Subsequent requests by the client are permissible. No indication is given of whether the condition is temporary or permanent.
405 Method Not Allowed
A request was made of a resource using a request method not supported by that resource; for example, using GET on a form which requires data to be presented via POST, or using PUT on a read-only resource.
406 Not Acceptable
The requested resource is only capable of generating content not acceptable according to the Accept headers sent in the request.
407 Proxy Authentication Required
This code is similar to 401 (Unauthorized), but indicates that the client must first authenticate itself with the proxy. The proxy MUST return a Proxy-Authenticate header field containing a challenge applicable to the proxy for the requested resource.
408 Request Timeout
The server timed out waiting for the request.
409 Conflict
Indicates that the request could not be processed because of conflict in the request, such as an edit conflict.
410 Gone
Indicates that the resource requested is no longer available and will not be available again. This should be used when a resource has been intentionally removed; however, it is not necessary to return this code and a 404 Not Found can be issued instead. Upon receiving a 410 status code, the client should not request the resource again in the future. Clients such as search engines should remove the resource from their indexes.
411 Length Required
The request did not specify the length of its content, which is required by the requested resource.
412 Precondition Failed
The server does not meet one of the preconditions that the requester put on the request.
413 Request Entity Too Large
The request is larger than the server is willing or able to process.
414 Request URI Too Long
The URI provided was too long for the server to process.
415 Unsupported Media Type
The request did not specify any media types that the server or resource supports. For example the client specified that an image resource should be served as image/svg+xml, but the server cannot find a matching version of the image.
416 Requested Range Not Satisfiable
The client has asked for a portion of the file, but the server cannot supply that portion (for example, if the client asked for a part of the file that lies beyond the end of the file).
417 Expectation Failed
The server cannot meet the requirements of the Expect request-header field.
418 I'm a teapot
The HTCPCP server is a teapot. The responding entity MAY be short and stout. This code was defined as one of the traditional IETF April Fools' jokes, in RFC 2324, Hyper Text Coffee Pot Control Protocol, and is not expected to be implemented by actual HTTP servers.
422 Unprocessable Entity (WebDAV) (RFC 4918 )
The request was well-formed but was unable to be followed due to semantic errors.
423 Locked (WebDAV) (RFC 4918 )
The resource that is being accessed is locked
424 Failed Dependency (WebDAV) (RFC 4918 )
The request failed due to failure of a previous request (e.g. a PROPPATCH).
425 Unordered Collection (RFC 3648 )
Defined in drafts of WebDav Advanced Collections, but not present in "Web Distributed Authoring and Versioning (WebDAV) Ordered Collections Protocol".
426 Upgrade Required (RFC 2817 )
The client should switch to TLS/1.0.
449 Retry With
A 微软 extension. The request should be retried after doing the appropriate action.
450 Blocked by Windows Parental Controls
A 微软 extension. This error is given when Windows Parental Controls are turned on and are blocking access to the given webpage.
500 Internal Server Error
A generic error message, given when no more specific message is suitable.
501 Not Implemented
The server either does not recognize the request method, or it lacks the ability to fulfil the request.
502 Bad Gateway
The server was acting as a gateway or proxy and received an invalid response from the downstream server.
503 Service Unavailable
The server is currently unavailable (because it is overloaded or down for maintenance). Generally, this is a temporary state.
504 Gateway Timeout
The server was acting as a gateway or proxy and did not receive a timely request from the downstream server.
505 HTTP Version Not Supported
The server does not support the HTTP protocol version used in the request.
506 Variant Also Negotiates (RFC 2295 )
Transparent content negotiation for the request, results in a circular reference.
507 Insufficient Storage (WebDAV) (RFC 4918 )
509 Bandwidth Limit Exceeded (Apache bw/limited extension)
This status code, while used by many servers, is not specified in any RFCs.
510 Not Extended (RFC 2774 )
Further extensions to the request are required for the server to fulfill it.
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如何控制注塑机螺杆产品的色差_js金沙登入网址118
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    如何控制注塑机螺杆产品的色差

    日期:2018-04-19 浏览量:100+

    摘要:注塑机螺杆对材质的要求有很多,之前js金沙登入网址118也有先容过。而色差是注塑机螺杆中常见的缺陷


      注塑螺杆对材质的要求有很多,之前js金沙登入网址118也有先容过。而色差是注塑机螺杆中常见的缺陷,色差影响要素众多,涉及质料树脂、色母、色母同质料的混合、注塑工艺、注塑机等。那么如何控制注塑机螺杆产品的色差呢?这一问题已被大多数行业所关注。接下来js金沙登入网址118一起探讨一下吧!

      在实际的生产进程中js金沙登入网址118一般从以下五个方面来进行色差的控制,具体方法如下:

      1、消除注塑机及模具要素的影响

      要挑选与注塑主品容量适当的注塑机,如果注塑机螺杆存在物料死角等问题,最好替换设备。关于模具浇注系统、排气槽等形成色差的,可通过相应部分模具的修理模来处理。有必要首先处理好注塑机及模具问题才能够组织生产,以削减问题的复杂性。

      2、消除质料树脂、色母的影响

      控制原材料是彻底解决色差的关键。因而,尤其是生产淡色制品时,不能忽视质料树脂的热稳定性不同对制品色泽波动带来的显着影响。鉴于大多数注塑生产厂家自身并不生产塑料母料或色母,这样,可将留意的焦点放在生产管理和原材料查验上。

      即加强原材料入库的查验;生产中同一产品尽可能选用同一厂家、同一商标母料、色母出产;关于色母,js金沙登入网址118在批量出产前要进行抽检试色,既要同前次校正,又要在本次中比较,如果色彩相差不大,可认为合格,如同批次色母有细微色差,可将色母从头混合后再运用,以削减色母自身混合不均形成的色差。另外js金沙登入网址118还需着重查验质料树脂、色母的热稳定性,关于热稳定性不好的,js金沙登入网址118建议厂家进行调换。

      3、削减料筒温度对色差的影响

      生产中常常会遇到因某个加热圈损坏失效,或是加热控制部分失控长烧形成料筒温度剧烈改动然后发生色差。这类原因发生的色差很容易断定,一般加热圈损坏失效发生色差的同时会伴随着塑化不均的现象,而加热操控部分失控长烧常伴随着产品气斑、严重变色乃至出现焦化现象。因而生产中需常常查看加热部分,发现加热部分损坏或失控时及时替换修理,以削减这类色差发生几率。

      4、削减注塑工艺调整时的影响

      非色差原因需调整注塑工艺参数时,尽可能不改动注塑温度、背压、注塑周期及色母加入量,在调整的同时还需调查工艺参数改动对色泽的影响,如发现色差应及时调整。尽可能避免运用高注射速度、高背压等引起强剪切效果的注塑工艺,避免因部分过热或热分化等要素形成的色差。严格控制料筒各加热段的温度,特别是喷嘴和紧靠喷嘴的加热部分。

      5、掌握料筒温度、色母量对注塑机螺杆产品色彩改动的影响

      在进行色差调整前还有必要知道产品色彩随温度、色母量改动的趋势。不同色母随生产的温度或色母量的改动,其产品色彩改动规则是不同的。可通过试色进程来断定其改动规则。除非已知道这种色母色彩的改动规则,不然不可能很快地调好色差。


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